{"id":"https://openalex.org/A5046834440","orcid":"https://orcid.org/0000-0001-6749-7478","observed_orcids":["https://orcid.org/0000-0001-6749-7478"],"display_name":"Pieter Spies","raw_author_names":["P.V. Spies","PV Spies","Petrus Venter Spies","Pieter Spies","Pieter V Spies","Pieter V. SPIES","Pieter V. Spies"],"full_name":"Pieter  Venter Spies","works_count":13,"cited_by_count":116,"summary_stats":{"2yr_mean_citedness":1.4285714285714286,"h_index":3,"i10_index":1},"ids":{"openalex":"https://openalex.org/A5046834440","orcid":"https://orcid.org/0000-0001-6749-7478","observed_orcids":["https://orcid.org/0000-0001-6749-7478"]},"affiliations":[{"institution":{"id":"https://openalex.org/I26092322","ror":"https://ror.org/05bk57929","display_name":"Stellenbosch University","country_code":"ZA","type":"education","lineage":["https://openalex.org/I26092322"]},"years":[2026,2025,2024,2023,2022,2017,2014]},{"institution":{"id":"https://openalex.org/I2802694459","ror":"https://ror.org/01hs8x754","display_name":"Tygerberg Hospital","country_code":"ZA","type":"healthcare","lineage":["https://openalex.org/I1307091933","https://openalex.org/I2802694459"]},"years":[2026,2024,2023,2022,2017,2014]}],"last_known_institutions":[{"id":"https://openalex.org/I26092322","ror":"https://ror.org/05bk57929","display_name":"Stellenbosch University","country_code":"ZA","type":"education","lineage":["https://openalex.org/I26092322"]},{"id":"https://openalex.org/I2802694459","ror":"https://ror.org/01hs8x754","display_name":"Tygerberg Hospital","country_code":"ZA","type":"healthcare","lineage":["https://openalex.org/I1307091933","https://openalex.org/I2802694459"]}],"topics":[{"id":"https://openalex.org/T11815","display_name":"Urological Disorders and Treatments","count":5,"subfield":{"id":"https://openalex.org/subfields/2748","display_name":"Urology"},"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/T10279","display_name":"Urinary Bladder and Prostate Research","count":4,"subfield":{"id":"https://openalex.org/subfields/2748","display_name":"Urology"},"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/T10124","display_name":"Prostate Cancer Diagnosis and Treatment","count":3,"subfield":{"id":"https://openalex.org/subfields/2748","display_name":"Urology"},"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/T10458","display_name":"Bladder and Urothelial Cancer Treatments","count":2,"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/T10599","display_name":"Reconstructive Surgery and Microvascular Techniques","count":2,"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/T12900","display_name":"Organ and Tissue Transplantation Research","value":1.93e-05,"subfield":{"id":"https://openalex.org/subfields/2747","display_name":"Transplantation"},"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/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/T11267","display_name":"Abdominal Trauma and Injuries","value":1.62e-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/T12049","display_name":"Tuberous Sclerosis Complex Research","value":1.55e-05,"subfield":{"id":"https://openalex.org/subfields/2716","display_name":"Genetics (clinical)"},"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/T11815","display_name":"Urological Disorders and Treatments","value":1.5e-05,"subfield":{"id":"https://openalex.org/subfields/2748","display_name":"Urology"},"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":0.9743461608886719},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.6137514710426331},{"id":"126838900","wikidata":"https://www.wikidata.org/wiki/Q77604","display_name":"Radiology","score":0.38819462060928345},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.37827247381210327},{"id":"121608353","wikidata":"https://www.wikidata.org/wiki/Q12078","display_name":"Cancer","score":0.3690434694290161}],"counts_by_year":[{"year":2014,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2017,"works_count":2,"oa_works_count":0,"cited_by_count":4},{"year":2018,"works_count":0,"oa_works_count":0,"cited_by_count":11},{"year":2019,"works_count":0,"oa_works_count":0,"cited_by_count":21},{"year":2020,"works_count":0,"oa_works_count":0,"cited_by_count":14},{"year":2021,"works_count":0,"oa_works_count":0,"cited_by_count":9},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":12},{"year":2023,"works_count":2,"oa_works_count":1,"cited_by_count":12},{"year":2024,"works_count":2,"oa_works_count":2,"cited_by_count":10},{"year":2025,"works_count":3,"oa_works_count":2,"cited_by_count":10},{"year":2026,"works_count":2,"oa_works_count":2,"cited_by_count":12}],"display_name_alternatives":["P.V. Spies","PV Spies","Petrus Venter Spies","Pieter Spies","Pieter V Spies","Pieter V. SPIES","Pieter V. Spies"],"block_key":"p spies","works_api_url":"https://api.openalex.org/works?filter=author.id:A5046834440","updated_date":"2026-11-07T12:08:38","created_date":"2016-06-24T00:00:00"}
