{"id":"https://openalex.org/A5111699081","orcid":null,"observed_orcids":[],"display_name":"K. J. Pfeifer","raw_author_names":["K J Pfeifer","K Pfeifer","K-J Pfeifer","K. J. PFEIFER","K. J. Pfeifer","K. Pfeifer","K.-J Pfeifer","K.-J. Pfeifer","K.J Pfeifer","K.J. Pfeifer","KJ Pfeifer","Klaus-J\ufffdrgen Pfeifer"],"full_name":"K. J. PFEIFER","works_count":139,"cited_by_count":1286,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":16,"i10_index":28},"ids":{"openalex":"https://openalex.org/A5111699081","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I3018771216","ror":"https://ror.org/02jet3w32","display_name":"LMU Klinikum","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I3018771216","https://openalex.org/I8204097"]},"years":[2008,2007,2005,2004,2003,2002,2001,2000,1999,1997,1996,1994,1983,1981,1977,1973]},{"institution":{"id":"https://openalex.org/I4210121101","ror":"https://ror.org/03pfshj32","display_name":"M\u00fcnchen Klinik","country_code":"DE","type":"healthcare","lineage":["https://openalex.org/I4210121101"]},"years":[1980]},{"institution":{"id":"https://openalex.org/I4405258122","ror":"https://ror.org/005506478","display_name":"Institut f\u00fcr Chirurgische Forschung","country_code":"DE","type":"facility","lineage":["https://openalex.org/I3018771216","https://openalex.org/I4405258122","https://openalex.org/I8204097"]},"years":[1975,1974,1973]},{"institution":{"id":"https://openalex.org/I4405259543","ror":"https://ror.org/02cqe8q68","display_name":"Pathologisches Institut","country_code":"DE","type":"education","lineage":["https://openalex.org/I4405259543","https://openalex.org/I8204097"]},"years":[1981,1979,1977]},{"institution":{"id":"https://openalex.org/I75951250","ror":"https://ror.org/046ak2485","display_name":"Freie Universit\u00e4t Berlin","country_code":"DE","type":"education","lineage":["https://openalex.org/I75951250"]},"years":[1996]},{"institution":{"id":"https://openalex.org/I8204097","ror":"https://ror.org/05591te55","display_name":"Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen","country_code":"DE","type":"education","lineage":["https://openalex.org/I8204097"]},"years":[2009,2008,2007,2006,2005,2004,2003,2002,2001,2000,1999,1998,1997,1996,1994,1993,1988,1987,1985,1983,1981,1980,1979,1978,1977,1976,1975,1974,1973]}],"last_known_institutions":[{"id":"https://openalex.org/I8204097","ror":"https://ror.org/05591te55","display_name":"Ludwig-Maximilians-Universit\u00e4t M\u00fcnchen","country_code":"DE","type":"education","lineage":["https://openalex.org/I8204097"]}],"topics":[{"id":"https://openalex.org/T12067","display_name":"Renal and Vascular Pathologies","count":19,"subfield":{"id":"https://openalex.org/subfields/2727","display_name":"Nephrology"},"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/T11467","display_name":"Trauma and Emergency Care Studies","count":18,"subfield":{"id":"https://openalex.org/subfields/2711","display_name":"Emergency 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/T10522","display_name":"Medical Imaging Techniques and Applications","count":15,"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/T11894","display_name":"Radiology practices and education","count":14,"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/T11951","display_name":"Trauma Management and Diagnosis","count":14,"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"}}],"topic_share":[{"id":"https://openalex.org/T12654","display_name":"Xenotransplantation and immune response","value":0.0001708,"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/T12067","display_name":"Renal and Vascular Pathologies","value":0.0001291,"subfield":{"id":"https://openalex.org/subfields/2727","display_name":"Nephrology"},"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/T11951","display_name":"Trauma Management and Diagnosis","value":9.23e-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/T11894","display_name":"Radiology practices and education","value":6.57e-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/T11467","display_name":"Trauma and Emergency Care Studies","value":5.14e-05,"subfield":{"id":"https://openalex.org/subfields/2711","display_name":"Emergency 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":0.9776657819747925},{"id":"29456083","wikidata":"https://www.wikidata.org/wiki/Q1221899","display_name":"Gynecology","score":0.8085638284683228},{"id":"126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","score":0.7484059929847717},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.636245846748352},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.5193392038345337}],"counts_by_year":[{"year":1972,"works_count":9,"oa_works_count":0,"cited_by_count":0},{"year":1973,"works_count":7,"oa_works_count":0,"cited_by_count":0},{"year":1974,"works_count":6,"oa_works_count":1,"cited_by_count":0},{"year":1975,"works_count":7,"oa_works_count":0,"cited_by_count":0},{"year":1976,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1977,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1978,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1979,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1980,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1991,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1994,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1997,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1998,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1999,"works_count":3,"oa_works_count":1,"cited_by_count":0},{"year":2000,"works_count":4,"oa_works_count":0,"cited_by_count":0},{"year":2001,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":2002,"works_count":11,"oa_works_count":0,"cited_by_count":0},{"year":2003,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":2004,"works_count":9,"oa_works_count":0,"cited_by_count":0},{"year":2005,"works_count":8,"oa_works_count":0,"cited_by_count":0},{"year":2006,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2007,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":2008,"works_count":10,"oa_works_count":1,"cited_by_count":0},{"year":2009,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":45},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":51},{"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":45},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":38},{"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":31},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":30},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":47},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":29},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":27},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":16},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":24},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":20}],"display_name_alternatives":["K J Pfeifer","K Pfeifer","K-J Pfeifer","K. J. PFEIFER","K. J. Pfeifer","K. Pfeifer","K.-J Pfeifer","K.-J. Pfeifer","K.J Pfeifer","K.J. Pfeifer","KJ Pfeifer","Klaus-J\ufffdrgen Pfeifer"],"block_key":"k pfeifer","works_api_url":"https://api.openalex.org/works?filter=author.id:A5111699081","updated_date":"2026-11-08T12:57:04","created_date":"2016-06-24T00:00:00"}