{"id":"https://openalex.org/A5036428735","orcid":"https://orcid.org/0000-0001-6238-3949","observed_orcids":["https://orcid.org/0000-0001-6238-3949"],"display_name":"Olaf Ortmann","raw_author_names":["O Ortmann","O. ORTMANN","O. Ortmann","O.\u00a0Ortmann","OLAF ORTMANN","Olaf Ortmann","Ortmann O","Ortmann, O","Ortmann, O.:","Ortmann, Olaf","Ortmann, Olaf:"],"full_name":"Ortmann, Olaf","works_count":903,"cited_by_count":10105,"summary_stats":{"2yr_mean_citedness":1.56,"h_index":50,"i10_index":210},"ids":{"openalex":"https://openalex.org/A5036428735","orcid":"https://orcid.org/0000-0001-6238-3949","observed_orcids":["https://orcid.org/0000-0001-6238-3949"]},"affiliations":[{"institution":{"id":"https://openalex.org/I114832834","ror":"https://ror.org/04vmvtb21","display_name":"Tulane University","country_code":"US","type":"education","lineage":["https://openalex.org/I114832834"]},"years":[1996]},{"institution":{"id":"https://openalex.org/I1299303238","ror":"https://ror.org/01cwqze88","display_name":"National Institutes of Health","country_code":"US","type":"government","lineage":["https://openalex.org/I1299022934","https://openalex.org/I1299303238"]},"years":[1994,1989,1988]},{"institution":{"id":"https://openalex.org/I135140700","ror":"https://ror.org/041nas322","display_name":"University of Bonn","country_code":"DE","type":"education","lineage":["https://openalex.org/I135140700"]},"years":[2006,2005]},{"institution":{"id":"https://openalex.org/I142947616","ror":"https://ror.org/043jzw605","display_name":"Institute of Cancer Research","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I142947616"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I145608581","ror":"https://ror.org/02dgjyy92","display_name":"University of Miami","country_code":"US","type":"education","lineage":["https://openalex.org/I145608581"]},"years":[2009]},{"institution":{"id":"https://openalex.org/I152743029","ror":"https://ror.org/03gk81f96","display_name":"Kaohsiung Medical University","country_code":"TW","type":"education","lineage":["https://openalex.org/I152743029"]},"years":[2009]},{"institution":{"id":"https://openalex.org/I159176309","ror":"https://ror.org/00g30e956","display_name":"Universit\u00e4t Hamburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I159176309"]},"years":[2006]},{"institution":{"id":"https://openalex.org/I161103922","ror":"https://ror.org/01rdrb571","display_name":"Philipps University of Marburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I161103922"]},"years":[2000,1998,1997,1996,1995,1994,1993,1992,1991,1990]},{"institution":{"id":"https://openalex.org/I162608824","ror":"https://ror.org/00ayhx656","display_name":"University of Sussex","country_code":"GB","type":"education","lineage":["https://openalex.org/I162608824"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I196349391","ror":"https://ror.org/032000t02","display_name":"Universit\u00e4t Ulm","country_code":"DE","type":"education","lineage":["https://openalex.org/I196349391"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I197323543","ror":"https://ror.org/023b0x485","display_name":"Johannes Gutenberg University Mainz","country_code":"DE","type":"education","lineage":["https://openalex.org/I197323543"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I200763008","ror":"https://ror.org/033eqas34","display_name":"Justus-Liebig-Universit\u00e4t Gie\u00dfen","country_code":"DE","type":"education","lineage":["https://openalex.org/I200763008"]},"years":[1996]},{"institution":{"id":"https://openalex.org/I25974101","ror":"https://ror.org/00fbnyb24","display_name":"University of W\u00fcrzburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I25974101"]},"years":[2012]},{"institution":{"id":"https://openalex.org/I2800231306","ror":"https://ror.org/0424bsv16","display_name":"Universitair Ziekenhuis Leuven","country_code":"BE","type":"healthcare","lineage":["https://openalex.org/I2800231306"]},"years":[2012]},{"institution":{"id":"https://openalex.org/I2800526087","ror":"https://ror.org/02ab2dg68","display_name":"Singleton Hospital","country_code":"GB","type":"healthcare","lineage":["https://openalex.org/I1294711689","https://openalex.org/I2800526087"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I2801316944","ror":"https://ror.org/054225q67","display_name":"Cancer Research UK","country_code":"GB","type":"nonprofit","lineage":["https://openalex.org/I2801316944"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I2801983185","ror":"https://ror.org/026dp0v66","display_name":"Union for International Cancer Control","country_code":"CH","type":"nonprofit","lineage":["https://openalex.org/I2801983185"]},"years":[2019,2016]},{"institution":{"id":"https://openalex.org/I2802328216","ror":"https://ror.org/05f0zr486","display_name":"Vienna General Hospital","country_code":"AT","type":"healthcare","lineage":["https://openalex.org/I2802328216"]},"years":[2009]},{"institution":{"id":"https://openalex.org/I2802587341","ror":"https://ror.org/02xmkec90","display_name":"Kaohsiung Medical University Chung-Ho Memorial Hospital","country_code":"TW","type":"healthcare","lineage":["https://openalex.org/I2802587341"]},"years":[2009]},{"institution":{"id":"https://openalex.org/I3129555431","ror":"https://ror.org/01226dv09","display_name":"University Hospital Regensburg","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I3129555431"]},"years":[2026,2025,2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2003]},{"institution":{"id":"https://openalex.org/I34809795","ror":"https://ror.org/00f2yqf98","display_name":"Medizinische Hochschule Hannover","country_code":"DE","type":"education","lineage":["https://openalex.org/I34809795"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I4210095785","ror":"https://ror.org/01kjfnp05","display_name":"Arbeitsgemeinschaft Gyn\u00e4kologische Onkologie Studiengruppe","country_code":"DE","type":"nonprofit","lineage":["https://openalex.org/I4210095785"]},"years":[2016,2006]},{"institution":{"id":"https://openalex.org/I4210098209","ror":"https://ror.org/00g01gj95","display_name":"Marienhospital Stuttgart","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210098209"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I4210103542","ror":"https://ror.org/013z6ae41","display_name":"German Cancer Society","country_code":"DE","type":"nonprofit","lineage":["https://openalex.org/I4210103542"]},"years":[2022,2021,2020,2019,2018,2016,2015]},{"institution":{"id":"https://openalex.org/I4210111460","ror":"https://ror.org/01txwsw02","display_name":"National Center for Tumor Diseases","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I1305996414","https://openalex.org/I17937529","https://openalex.org/I223822909","https://openalex.org/I2802164966","https://openalex.org/I4210111460"]},"years":[2026]},{"institution":{"id":"https://openalex.org/I4210112654","ror":"https://ror.org/024j3hn90","display_name":"Universit\u00e4tsklinikum Knappschaftskrankenhaus Bochum","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I2799784675","https://openalex.org/I4210112654"]},"years":[2021,2020]},{"institution":{"id":"https://openalex.org/I4210112713","ror":"https://ror.org/01tvm6f46","display_name":"University Hospital Schleswig-Holstein","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210112713"]},"years":[2011,2003]},{"institution":{"id":"https://openalex.org/I4210130803","ror":"https://ror.org/03c8hnh70","display_name":"German Breast Group","country_code":"DE","type":"nonprofit","lineage":["https://openalex.org/I4210130803"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I4210138941","ror":"https://ror.org/04fkwzm96","display_name":"Donostiako Unibertsitate Ospitalea","country_code":"ES","type":"healthcare","lineage":["https://openalex.org/I169108374","https://openalex.org/I4210125364","https://openalex.org/I4210138941"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I4210144228","ror":"https://ror.org/04byxyr05","display_name":"Eunice Kennedy Shriver National Institute of Child Health and Human Development","country_code":"US","type":"facility","lineage":["https://openalex.org/I1299022934","https://openalex.org/I1299303238","https://openalex.org/I4210144228"]},"years":[1994,1989,1988]},{"institution":{"id":"https://openalex.org/I4210149747","ror":"https://ror.org/05jfz9645","display_name":"Comprehensive Cancer Center Erlangen","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210149747"]},"years":[2026,2025]},{"institution":{"id":"https://openalex.org/I4210154003","ror":"https://ror.org/04ncnj403","display_name":"HELIOS Albert-Schweitzer-Klinik Northeim","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210138940","https://openalex.org/I4210154003"]},"years":[2000]},{"institution":{"id":"https://openalex.org/I4210157716","ror":"https://ror.org/04w9ddv64","display_name":"Caritas-Krankenhaus St. Josef","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210157716"]},"years":[2026,2025,2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003]},{"institution":{"id":"https://openalex.org/I4210163263","ror":"https://ror.org/05ygm7711","display_name":"GEICAM \u2013 Spanish Breast Cancer Group","country_code":"ES","type":"nonprofit","lineage":["https://openalex.org/I4210163263"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I4387156288","ror":"https://ror.org/02794jc95","display_name":"Klinik und Poliklinik f\u00fcr Frauenheilkunde und Geburtshilfe","country_code":null,"type":"healthcare","lineage":["https://openalex.org/I3018771216","https://openalex.org/I4387156288","https://openalex.org/I8204097"]},"years":[2012,1987,1985]},{"institution":{"id":"https://openalex.org/I4392738228","ror":"https://ror.org/016rf0n60","display_name":"Stiftung Charit\u00e9","country_code":null,"type":"nonprofit","lineage":["https://openalex.org/I4392738228","https://openalex.org/I7877124"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I4665924","ror":"https://ror.org/03zdwsf69","display_name":"University of Rostock","country_code":"DE","type":"education","lineage":["https://openalex.org/I4665924"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I47508984","ror":"https://ror.org/041kmwe10","display_name":"Imperial College London","country_code":"GB","type":"education","lineage":["https://openalex.org/I47508984"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I60668342","ror":"https://ror.org/01eezs655","display_name":"University of Regensburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I60668342"]},"years":[2026,2025,2024,2023,2022,2021,2020,2019,2018,2017,2016,2015,2014,2013,2012,2011,2010,2009,2008,2007,2006,2005,2004,2003]},{"institution":{"id":"https://openalex.org/I62318514","ror":"https://ror.org/04mz5ra38","display_name":"University of Duisburg-Essen","country_code":"DE","type":"education","lineage":["https://openalex.org/I62318514"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I7877124","ror":"https://ror.org/001w7jn25","display_name":"Charit\u00e9 - Universit\u00e4tsmedizin Berlin","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I7877124"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I9341345","ror":"https://ror.org/00t3r8h32","display_name":"University of L\u00fcbeck","country_code":"DE","type":"education","lineage":["https://openalex.org/I9341345"]},"years":[2009,2006,2004,2003,2002,2001,2000,1999,1998,1997,1994,1992,1990,1989,1988,1987,1986,1985]}],"last_known_institutions":[{"id":"https://openalex.org/I3129555431","ror":"https://ror.org/01226dv09","display_name":"University Hospital Regensburg","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I3129555431"]},{"id":"https://openalex.org/I4210111460","ror":"https://ror.org/01txwsw02","display_name":"National Center for Tumor Diseases","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I1305996414","https://openalex.org/I17937529","https://openalex.org/I223822909","https://openalex.org/I2802164966","https://openalex.org/I4210111460"]},{"id":"https://openalex.org/I4210149747","ror":"https://ror.org/05jfz9645","display_name":"Comprehensive Cancer Center Erlangen","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210149747"]},{"id":"https://openalex.org/I4210157716","ror":"https://ror.org/04w9ddv64","display_name":"Caritas-Krankenhaus St. Josef","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210157716"]},{"id":"https://openalex.org/I60668342","ror":"https://ror.org/01eezs655","display_name":"University of Regensburg","country_code":"DE","type":"education","lineage":["https://openalex.org/I60668342"]}],"topics":[{"id":"https://openalex.org/T10756","display_name":"Estrogen and related hormone effects","count":285,"subfield":{"id":"https://openalex.org/subfields/1311","display_name":"Genetics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10183","display_name":"Breast Cancer Treatment Studies","count":279,"subfield":{"id":"https://openalex.org/subfields/1306","display_name":"Cancer Research"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10668","display_name":"Endometrial and Cervical Cancer Treatments","count":134,"subfield":{"id":"https://openalex.org/subfields/2729","display_name":"Obstetrics and Gynecology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10694","display_name":"Menopause: Health Impacts and Treatments","count":126,"subfield":{"id":"https://openalex.org/subfields/2712","display_name":"Endocrinology, Diabetes and Metabolism"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10550","display_name":"Ovarian cancer diagnosis and treatment","count":120,"subfield":{"id":"https://openalex.org/subfields/2743","display_name":"Reproductive Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10756","display_name":"Estrogen and related hormone effects","value":0.0007544,"subfield":{"id":"https://openalex.org/subfields/1311","display_name":"Genetics"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10694","display_name":"Menopause: Health Impacts and Treatments","value":0.0006809,"subfield":{"id":"https://openalex.org/subfields/2712","display_name":"Endocrinology, Diabetes and Metabolism"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T12829","display_name":"Advanced Breast Cancer Therapies","value":0.0005561,"subfield":{"id":"https://openalex.org/subfields/2740","display_name":"Pulmonary and Respiratory Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10183","display_name":"Breast Cancer Treatment Studies","value":0.0005204,"subfield":{"id":"https://openalex.org/subfields/1306","display_name":"Cancer Research"},"field":{"id":"https://openalex.org/fields/13","display_name":"Biochemistry, Genetics and Molecular Biology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10668","display_name":"Endometrial and Cervical Cancer Treatments","value":0.0004427,"subfield":{"id":"https://openalex.org/subfields/2729","display_name":"Obstetrics and Gynecology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9858779907226562},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.9276963472366333},{"id":"29456083","wikidata":"https://www.wikidata.org/wiki/Q1221899","display_name":"Gynecology","score":0.8824154138565063},{"id":"86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","score":0.8309439420700073},{"id":"121608353","wikidata":"https://www.wikidata.org/wiki/Q12078","display_name":"Cancer","score":0.7881155014038086}],"counts_by_year":[{"year":1985,"works_count":2,"oa_works_count":0,"cited_by_count":1},{"year":1986,"works_count":2,"oa_works_count":0,"cited_by_count":33},{"year":1987,"works_count":2,"oa_works_count":0,"cited_by_count":4},{"year":1988,"works_count":3,"oa_works_count":0,"cited_by_count":60},{"year":1989,"works_count":8,"oa_works_count":0,"cited_by_count":74},{"year":1990,"works_count":3,"oa_works_count":0,"cited_by_count":79},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":1},{"year":1992,"works_count":7,"oa_works_count":0,"cited_by_count":139},{"year":1993,"works_count":8,"oa_works_count":0,"cited_by_count":412},{"year":1994,"works_count":4,"oa_works_count":0,"cited_by_count":93},{"year":1995,"works_count":2,"oa_works_count":0,"cited_by_count":129},{"year":1996,"works_count":4,"oa_works_count":1,"cited_by_count":139},{"year":1997,"works_count":5,"oa_works_count":2,"cited_by_count":113},{"year":1998,"works_count":12,"oa_works_count":0,"cited_by_count":164},{"year":1999,"works_count":10,"oa_works_count":1,"cited_by_count":320},{"year":2000,"works_count":7,"oa_works_count":1,"cited_by_count":191},{"year":2001,"works_count":4,"oa_works_count":0,"cited_by_count":160},{"year":2002,"works_count":16,"oa_works_count":1,"cited_by_count":219},{"year":2003,"works_count":22,"oa_works_count":2,"cited_by_count":145},{"year":2004,"works_count":9,"oa_works_count":2,"cited_by_count":111},{"year":2005,"works_count":22,"oa_works_count":1,"cited_by_count":35},{"year":2006,"works_count":26,"oa_works_count":2,"cited_by_count":245},{"year":2007,"works_count":27,"oa_works_count":3,"cited_by_count":1111},{"year":2008,"works_count":36,"oa_works_count":7,"cited_by_count":190},{"year":2009,"works_count":59,"oa_works_count":13,"cited_by_count":616},{"year":2010,"works_count":31,"oa_works_count":4,"cited_by_count":149},{"year":2011,"works_count":21,"oa_works_count":6,"cited_by_count":503},{"year":2012,"works_count":45,"oa_works_count":7,"cited_by_count":325},{"year":2013,"works_count":55,"oa_works_count":19,"cited_by_count":1044},{"year":2014,"works_count":48,"oa_works_count":17,"cited_by_count":426},{"year":2015,"works_count":32,"oa_works_count":9,"cited_by_count":204},{"year":2016,"works_count":28,"oa_works_count":9,"cited_by_count":141},{"year":2017,"works_count":19,"oa_works_count":8,"cited_by_count":292},{"year":2018,"works_count":39,"oa_works_count":12,"cited_by_count":318},{"year":2019,"works_count":37,"oa_works_count":13,"cited_by_count":346},{"year":2020,"works_count":64,"oa_works_count":22,"cited_by_count":515},{"year":2021,"works_count":42,"oa_works_count":21,"cited_by_count":473},{"year":2022,"works_count":39,"oa_works_count":18,"cited_by_count":322},{"year":2023,"works_count":27,"oa_works_count":11,"cited_by_count":146},{"year":2024,"works_count":39,"oa_works_count":15,"cited_by_count":86},{"year":2025,"works_count":26,"oa_works_count":12,"cited_by_count":31},{"year":2026,"works_count":10,"oa_works_count":6,"cited_by_count":0}],"display_name_alternatives":["O Ortmann","O. ORTMANN","O. Ortmann","O.\u00a0Ortmann","OLAF ORTMANN","Olaf Ortmann","Ortmann O","Ortmann, O","Ortmann, O.:","Ortmann, Olaf","Ortmann, Olaf:"],"block_key":"o ortmann","works_api_url":"https://api.openalex.org/works?filter=author.id:A5036428735","updated_date":"2026-10-13T12:33:52","created_date":"2016-06-24T00:00:00"}