{"id":"https://openalex.org/A5062877284","orcid":"https://orcid.org/0000-0001-5811-0489","observed_orcids":["https://orcid.org/0000-0001-5811-0489"],"display_name":"Ahmed Mohammed Umar","raw_author_names":["A.M. Umar","Ahmed M. Umar","Ahmed Mohammed Umar","Mohammed A. Umar"],"full_name":"Ahmed Mohammed Umar","works_count":19,"cited_by_count":23,"summary_stats":{"2yr_mean_citedness":0.3,"h_index":2,"i10_index":1},"ids":{"openalex":"https://openalex.org/A5062877284","orcid":"https://orcid.org/0000-0001-5811-0489","observed_orcids":["https://orcid.org/0000-0001-5811-0489"]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210098521","ror":"https://ror.org/00g972x47","display_name":"Usmanu Danfodiyo University Teaching Hospital, Sokoto","country_code":"NG","type":"healthcare","lineage":["https://openalex.org/I4210098521"]},"years":[2025,2024,2022,2021,2020,2019]},{"institution":{"id":"https://openalex.org/I55202024","ror":"https://ror.org/006er0w72","display_name":"Usmanu Danfodiyo University","country_code":"NG","type":"education","lineage":["https://openalex.org/I55202024"]},"years":[2025,2024,2022,2021]},{"institution":{"id":"https://openalex.org/I876237426","ror":"https://ror.org/04fbh1w34","display_name":"Gombe State University","country_code":"NG","type":"education","lineage":["https://openalex.org/I876237426"]},"years":[2026]}],"last_known_institutions":[{"id":"https://openalex.org/I876237426","ror":"https://ror.org/04fbh1w34","display_name":"Gombe State University","country_code":"NG","type":"education","lineage":["https://openalex.org/I876237426"]}],"topics":[{"id":"https://openalex.org/T11815","display_name":"Urological Disorders and Treatments","count":7,"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":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/T12634","display_name":"Ureteral procedures and complications","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/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/T10543","display_name":"Prostate Cancer Treatment and Research","count":3,"subfield":{"id":"https://openalex.org/subfields/1306","display_name":"Cancer Research"},"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"}}],"topic_share":[{"id":"https://openalex.org/T12634","display_name":"Ureteral procedures and complications","value":2.81e-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"}},{"id":"https://openalex.org/T12866","display_name":"Urologic and reproductive health conditions","value":2.45e-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"}},{"id":"https://openalex.org/T12695","display_name":"Urinary and Genital Oncology Studies","value":2.12e-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/T11815","display_name":"Urological Disorders and Treatments","value":2.09e-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"}},{"id":"https://openalex.org/T11713","display_name":"Genital Health and Disease","value":2.04e-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":0.9797545671463013},{"id":"141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","score":0.7325000166893005},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.5170753598213196},{"id":"61434518","wikidata":"https://www.wikidata.org/wiki/Q932510","display_name":"General surgery","score":0.4750252366065979},{"id":"121608353","wikidata":"https://www.wikidata.org/wiki/Q12078","display_name":"Cancer","score":0.4562860429286957}],"counts_by_year":[{"year":2019,"works_count":4,"oa_works_count":3,"cited_by_count":0},{"year":2020,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2021,"works_count":2,"oa_works_count":2,"cited_by_count":2},{"year":2022,"works_count":1,"oa_works_count":1,"cited_by_count":1},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":2},{"year":2024,"works_count":4,"oa_works_count":4,"cited_by_count":6},{"year":2025,"works_count":4,"oa_works_count":4,"cited_by_count":2},{"year":2026,"works_count":2,"oa_works_count":2,"cited_by_count":10}],"display_name_alternatives":["A.M. Umar","Ahmed M. Umar","Ahmed Mohammed Umar","Mohammed A. Umar"],"block_key":"a umar","works_api_url":"https://api.openalex.org/works?filter=author.id:A5062877284","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5062877284","updated_date":"2026-11-12T13:17:38","created_date":"2019-05-09T00:00:00"}