{"id":"https://openalex.org/A5110182907","orcid":null,"observed_orcids":[],"display_name":"H. K. L. Nielsen","raw_author_names":["H K L Nielsen","H K Nielsen","H. K. L. NIELSEN","H. K. L. Nielsen","H. K.L. Nielsen","H. Nielsen","H.K.L. Nielsen","HK Nielsen","NIELSEN, HKL"],"full_name":"H. Kirkegaard Nielsen","works_count":48,"cited_by_count":672,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":15,"i10_index":18},"ids":{"openalex":"https://openalex.org/A5110182907","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I1330342723","ror":"https://ror.org/02qp3tb03","display_name":"Mayo Clinic","country_code":"US","type":"healthcare","lineage":["https://openalex.org/I1330342723"]},"years":[1966]},{"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":[1996,1993,1991,1990,1989,1986,1985,1984,1983,1982]},{"institution":{"id":"https://openalex.org/I169381384","ror":"https://ror.org/012p63287","display_name":"University of Groningen","country_code":"NL","type":"education","lineage":["https://openalex.org/I169381384"]},"years":[1992,1983]},{"institution":{"id":"https://openalex.org/I2802934949","ror":"https://ror.org/05wg1m734","display_name":"Radboud University Medical Center","country_code":"NL","type":"funder","lineage":["https://openalex.org/I2802934949"]},"years":[1996]},{"institution":{"id":"https://openalex.org/I4210120251","ror":"https://ror.org/01wmkgr68","display_name":"Link (Germany)","country_code":"DE","type":"company","lineage":["https://openalex.org/I4210120251"]},"years":[1991]},{"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":[1966,1965]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10975","display_name":"Bone Tumor Diagnosis and Treatments","count":15,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports 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/T10512","display_name":"Orthopaedic implants and arthroplasty","count":13,"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/T10253","display_name":"Sarcoma Diagnosis and Treatment","count":11,"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/T10658","display_name":"Bone fractures and treatments","count":11,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports 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/T10442","display_name":"Knee injuries and reconstruction techniques","count":10,"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/T10975","display_name":"Bone Tumor Diagnosis and Treatments","value":6.47e-05,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports 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/T10512","display_name":"Orthopaedic implants and arthroplasty","value":4.18e-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/T12459","display_name":"Nerve Injury and Rehabilitation","value":3.89e-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/T10442","display_name":"Knee injuries and reconstruction techniques","value":3.72e-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/T12800","display_name":"Musculoskeletal synovial abnormalities and treatments","value":3.59e-05,"subfield":{"id":"https://openalex.org/subfields/2745","display_name":"Rheumatology"},"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":0.9909192323684692},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.7224813103675842},{"id":"142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","score":0.5708792805671692},{"id":"105702510","wikidata":"https://www.wikidata.org/wiki/Q514","display_name":"Anatomy","score":0.43812352418899536},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.39760419726371765}],"counts_by_year":[{"year":1965,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1966,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1968,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1972,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1981,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1982,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1983,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1984,"works_count":6,"oa_works_count":0,"cited_by_count":0},{"year":1985,"works_count":3,"oa_works_count":0,"cited_by_count":0},{"year":1986,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1987,"works_count":2,"oa_works_count":0,"cited_by_count":0},{"year":1988,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1989,"works_count":6,"oa_works_count":0,"cited_by_count":0},{"year":1990,"works_count":4,"oa_works_count":1,"cited_by_count":0},{"year":1991,"works_count":5,"oa_works_count":0,"cited_by_count":0},{"year":1992,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1993,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":1996,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":1999,"works_count":1,"oa_works_count":0,"cited_by_count":0},{"year":2012,"works_count":0,"oa_works_count":0,"cited_by_count":28},{"year":2013,"works_count":0,"oa_works_count":0,"cited_by_count":28},{"year":2014,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2015,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2016,"works_count":0,"oa_works_count":0,"cited_by_count":17},{"year":2017,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":10},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":7},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2022,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":4},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":5},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":5}],"display_name_alternatives":["H K L Nielsen","H K Nielsen","H. K. L. NIELSEN","H. K. L. Nielsen","H. K.L. Nielsen","H. Nielsen","H.K.L. Nielsen","HK Nielsen","NIELSEN, HKL"],"block_key":"h nielsen","works_api_url":"https://api.openalex.org/works?filter=author.id:A5110182907","awards_count":0,"updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}