{"id":"https://openalex.org/A5109804331","orcid":null,"observed_orcids":[],"display_name":"Heidrun Stephan","raw_author_names":["H Stephan","H. STEPHAN","H. Stephan","Heidrun STEPHAN","Heidrun Stephan"],"full_name":"Heidrun Stephan","works_count":75,"cited_by_count":1300,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":16,"i10_index":18},"ids":{"openalex":"https://openalex.org/A5109804331","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210116730","ror":"https://ror.org/021ft0n22","display_name":"Universit\u00e4tsmedizin G\u00f6ttingen","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210116730"]},"years":[2000,1996,1995,1994,1993,1992,1991,1990,1989,1988]},{"institution":{"id":"https://openalex.org/I74656192","ror":"https://ror.org/01y9bpm73","display_name":"University of G\u00f6ttingen","country_code":"DE","type":"education","lineage":["https://openalex.org/I74656192"]},"years":[2000,1999,1998,1997,1996,1995,1994,1993,1992,1991,1990,1989,1988,1987,1986,1978]},{"institution":{"id":"https://openalex.org/I78577930","ror":"https://ror.org/00hj8s172","display_name":"Columbia University","country_code":"US","type":"education","lineage":["https://openalex.org/I78577930"]},"years":[1988,1987]}],"last_known_institutions":[{"id":"https://openalex.org/I4210116730","ror":"https://ror.org/021ft0n22","display_name":"Universit\u00e4tsmedizin G\u00f6ttingen","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210116730"]},{"id":"https://openalex.org/I74656192","ror":"https://ror.org/01y9bpm73","display_name":"University of G\u00f6ttingen","country_code":"DE","type":"education","lineage":["https://openalex.org/I74656192"]}],"topics":[{"id":"https://openalex.org/T11700","display_name":"Hemodynamic Monitoring and Therapy","count":37,"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/T10436","display_name":"Anesthesia and Sedative Agents","count":30,"subfield":{"id":"https://openalex.org/subfields/2703","display_name":"Anesthesiology and Pain 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/T11055","display_name":"Cardiac and Coronary Surgery Techniques","count":29,"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/T10706","display_name":"Traumatic Brain Injury and Neurovascular Disturbances","count":18,"subfield":{"id":"https://openalex.org/subfields/2728","display_name":"Clinical Neurology"},"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/T12930","display_name":"Biomedical and Chemical Research","count":12,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"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/T11700","display_name":"Hemodynamic Monitoring and Therapy","value":0.0001256,"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/T12434","display_name":"Phosphodiesterase function and regulation","value":0.0001136,"subfield":{"id":"https://openalex.org/subfields/1312","display_name":"Molecular Biology"},"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/T11055","display_name":"Cardiac and Coronary Surgery Techniques","value":0.0001027,"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/T12930","display_name":"Biomedical and Chemical Research","value":9.19e-05,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"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/T11930","display_name":"Cardiac, Anesthesia and Surgical Outcomes","value":6.33e-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":0.982660710811615},{"id":"42219234","wikidata":"https://www.wikidata.org/wiki/Q131130","display_name":"Anesthesia","score":0.8050389289855957},{"id":"164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","score":0.7273492813110352},{"id":"178853913","wikidata":"https://www.wikidata.org/wiki/Q1642137","display_name":"Hemodynamics","score":0.673183262348175},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.6551182270050049}],"counts_by_year":[{"year":1978,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":1985,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1986,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":1987,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":1988,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":1990,"works_count":4,"oa_works_count":2,"cited_by_count":0},{"year":1991,"works_count":18,"oa_works_count":2,"cited_by_count":0},{"year":1992,"works_count":7,"oa_works_count":2,"cited_by_count":0},{"year":1993,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":9,"oa_works_count":1,"cited_by_count":0},{"year":1995,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":3,"oa_works_count":0,"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":2,"cited_by_count":0},{"year":1999,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2000,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":36},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":31},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":25},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":18},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":10},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":19},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":8}],"display_name_alternatives":["H Stephan","H. STEPHAN","H. Stephan","Heidrun STEPHAN","Heidrun Stephan"],"block_key":"h stephan","works_api_url":"https://api.openalex.org/works?filter=author.id:A5109804331","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}