{"id":"https://openalex.org/A5111937356","orcid":null,"observed_orcids":[],"display_name":"Jan-Willem H. Leer","raw_author_names":["Jan-Willem H Leer","Jan-Willem H Leer M.D., Ph.D.","Jan-Willem H. Leer"],"full_name":"Jan-Willem H. Leer","works_count":20,"cited_by_count":1998,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":17,"i10_index":17},"ids":{"openalex":"https://openalex.org/A5111937356","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I121797337","ror":"https://ror.org/027bh9e22","display_name":"Leiden University","country_code":"NL","type":"education","lineage":["https://openalex.org/I121797337"]},"years":[1997,1993]},{"institution":{"id":"https://openalex.org/I1334415907","ror":"https://ror.org/03cv38k47","display_name":"University Medical Center Groningen","country_code":"NL","type":"healthcare","lineage":["https://openalex.org/I1334415907"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I2800006345","ror":"https://ror.org/05xvt9f17","display_name":"Leiden University Medical Center","country_code":"NL","type":"funder","lineage":["https://openalex.org/I2800006345"]},"years":[2006,2005,2000,1999,1998,1996,1993,1989]},{"institution":{"id":"https://openalex.org/I2801238018","ror":"https://ror.org/01qavk531","display_name":"Catharina Ziekenhuis","country_code":"NL","type":"healthcare","lineage":["https://openalex.org/I2801238018"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I4210144153","ror":"https://ror.org/048338z54","display_name":"Radiotherapiegroep","country_code":"NL","type":"healthcare","lineage":["https://openalex.org/I4210144153"]},"years":[2004]},{"institution":{"id":"https://openalex.org/I4210161616","ror":"https://ror.org/059wkzj26","display_name":"Maastro Clinic","country_code":"NL","type":"healthcare","lineage":["https://openalex.org/I4210161616"]},"years":[2005]},{"institution":{"id":"https://openalex.org/I887064364","ror":"https://ror.org/04dkp9463","display_name":"University of Amsterdam","country_code":"NL","type":"education","lineage":["https://openalex.org/I887064364"]},"years":[1993]}],"last_known_institutions":[{"id":"https://openalex.org/I2800006345","ror":"https://ror.org/05xvt9f17","display_name":"Leiden University Medical Center","country_code":"NL","type":"funder","lineage":["https://openalex.org/I2800006345"]}],"topics":[{"id":"https://openalex.org/T10804","display_name":"Health Systems, Economic Evaluations, Quality of Life","count":6,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10358","display_name":"Advanced Radiotherapy Techniques","count":5,"subfield":{"id":"https://openalex.org/subfields/3108","display_name":"Radiation"},"field":{"id":"https://openalex.org/fields/31","display_name":"Physics and Astronomy"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10178","display_name":"Cancer survivorship and care","count":4,"subfield":{"id":"https://openalex.org/subfields/2730","display_name":"Oncology"},"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/T10307","display_name":"Head and Neck Cancer Studies","count":4,"subfield":{"id":"https://openalex.org/subfields/2733","display_name":"Otorhinolaryngology"},"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/T10841","display_name":"Economic and Environmental Valuation","count":4,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}}],"topic_share":[{"id":"https://openalex.org/T10841","display_name":"Economic and Environmental Valuation","value":2.35e-05,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T12443","display_name":"Delphi Technique in Research","value":1.63e-05,"subfield":{"id":"https://openalex.org/subfields/3312","display_name":"Sociology and Political Science"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10804","display_name":"Health Systems, Economic Evaluations, Quality of Life","value":1.59e-05,"subfield":{"id":"https://openalex.org/subfields/2002","display_name":"Economics and Econometrics"},"field":{"id":"https://openalex.org/fields/20","display_name":"Economics, Econometrics and Finance"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T13123","display_name":"Advances in Oncology and Radiotherapy","value":1.42e-05,"subfield":{"id":"https://openalex.org/subfields/2741","display_name":"Radiology, Nuclear Medicine and Imaging"},"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/T13110","display_name":"Colorectal and Anal Carcinomas","value":1.26e-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"}}],"x_concepts":[{"id":"71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","score":0.9788708686828613},{"id":"509974204","wikidata":"https://www.wikidata.org/wiki/Q180507","display_name":"Radiation therapy","score":0.8216880559921265},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.5081217288970947},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.4631921648979187},{"id":"121608353","wikidata":"https://www.wikidata.org/wiki/Q12078","display_name":"Cancer","score":0.45147740840911865}],"counts_by_year":[{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":5,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":1997,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1999,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2004,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":116},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":130},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":102},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":95},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":66},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":101},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":52},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":55},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":74},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":59},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":42},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":46},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":42},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":39},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":19}],"display_name_alternatives":["Jan-Willem H Leer","Jan-Willem H Leer M.D., Ph.D.","Jan-Willem H. Leer"],"block_key":"j leer","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111937356","updated_date":"2026-11-04T11:47:51","created_date":"2016-06-24T00:00:00"}