{"id":"https://openalex.org/A5111741754","orcid":null,"observed_orcids":[],"display_name":"G Marggraf","raw_author_names":["G MARGGRAF","G Marggraf","G. Marggraf","Guenter Marggraf","Marggraf, Guenter"],"full_name":"Marggraf, Guenter","works_count":29,"cited_by_count":678,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":11,"i10_index":11},"ids":{"openalex":"https://openalex.org/A5111741754","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210119759","ror":"https://ror.org/02na8dn90","display_name":"Essen University Hospital","country_code":"DE","type":"funder","lineage":["https://openalex.org/I4210119759"]},"years":[2015,2014,2010,2009,2006,2005,2004,1995,1994,1987]},{"institution":{"id":"https://openalex.org/I4210161917","ror":"https://ror.org/05aw6p704","display_name":"West German Heart and Vascular Center Essen","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210119759","https://openalex.org/I4210161917"]},"years":[2015,2014,2012,2010,2009,2008,2007,2006,2005,2004]},{"institution":{"id":"https://openalex.org/I4405270573","ror":"https://ror.org/00ykp8811","display_name":"Stiftung Universit\u00e4tsmedizin Essen","country_code":"DE","type":"nonprofit","lineage":["https://openalex.org/I4405270573"]},"years":[2014,1994,1992]},{"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":[2012,2004]}],"last_known_institutions":[{"id":"https://openalex.org/I4210119759","ror":"https://ror.org/02na8dn90","display_name":"Essen University Hospital","country_code":"DE","type":"funder","lineage":["https://openalex.org/I4210119759"]},{"id":"https://openalex.org/I4210161917","ror":"https://ror.org/05aw6p704","display_name":"West German Heart and Vascular Center Essen","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210119759","https://openalex.org/I4210161917"]}],"topics":[{"id":"https://openalex.org/T11055","display_name":"Cardiac and Coronary Surgery Techniques","count":15,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/T10292","display_name":"Acute Myocardial Infarction Research","count":11,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular 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/T10193","display_name":"Coronary Interventions and Diagnostics","count":5,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular 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/T11189","display_name":"Transplantation: Methods and Outcomes","count":4,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/T10218","display_name":"Sepsis Diagnosis and Treatment","count":3,"subfield":{"id":"https://openalex.org/subfields/2706","display_name":"Critical Care and Intensive Care 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/T11055","display_name":"Cardiac and Coronary Surgery Techniques","value":5.31e-05,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/T12352","display_name":"Heparin-Induced Thrombocytopenia and Thrombosis","value":3.18e-05,"subfield":{"id":"https://openalex.org/subfields/2720","display_name":"Hematology"},"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/T10292","display_name":"Acute Myocardial Infarction Research","value":2.52e-05,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular 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/T10993","display_name":"Complement system in diseases","value":1.79e-05,"subfield":{"id":"https://openalex.org/subfields/2403","display_name":"Immunology"},"field":{"id":"https://openalex.org/fields/24","display_name":"Immunology and Microbiology"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T10675","display_name":"Mechanical Circulatory Support Devices","value":1.64e-05,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"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":0.9901621341705322},{"id":"164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","score":0.8256912231445312},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.8073256015777588},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.7036880254745483},{"id":"2776820930","wikidata":"https://www.wikidata.org/wiki/Q9655","display_name":"Artery","score":0.6530627012252808}],"counts_by_year":[{"year":1983,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":2005,"works_count":6,"oa_works_count":2,"cited_by_count":0},{"year":2006,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2007,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2009,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":1,"oa_works_count":1,"cited_by_count":51},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":42},{"year":2014,"works_count":1,"oa_works_count":1,"cited_by_count":46},{"year":2015,"works_count":1,"oa_works_count":0,"cited_by_count":35},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":54},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":32},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":37},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":44},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":33},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":34},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":28},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":22},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":9}],"display_name_alternatives":["G MARGGRAF","G Marggraf","G. Marggraf","Guenter Marggraf","Marggraf, Guenter"],"block_key":"g marggraf","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111741754","awards_count":0,"updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}