{"id":"https://openalex.org/A5091990384","orcid":null,"observed_orcids":[],"display_name":"Ulf Frejvall","raw_author_names":["Frejvall, Ulf","Ulf Frejvall"],"full_name":"Ulf Frejvall","works_count":5,"cited_by_count":4,"summary_stats":{"2yr_mean_citedness":1.0,"h_index":1,"i10_index":0},"ids":{"openalex":"https://openalex.org/A5091990384","orcid":null,"observed_orcids":[]},"affiliations":[{"institution":{"id":"https://openalex.org/I4210137844","ror":"https://ror.org/02z31g829","display_name":"Sk\u00e5ne University Hospital","country_code":"SE","type":"healthcare","lineage":["https://openalex.org/I4210137844"]},"years":[2024,2023]}],"last_known_institutions":null,"topics":[{"id":"https://openalex.org/T10498","display_name":"Migraine and Headache Studies","count":5,"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/T10094","display_name":"Epilepsy research and treatment","count":2,"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/T10196","display_name":"Pain Mechanisms and Treatments","count":2,"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/T10365","display_name":"Gastrointestinal motility and disorders","count":2,"subfield":{"id":"https://openalex.org/subfields/2715","display_name":"Gastroenterology"},"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/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","count":2,"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"}}],"topic_share":[{"id":"https://openalex.org/T10498","display_name":"Migraine and Headache Studies","value":3.49e-05,"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/T10420","display_name":"Intracranial Aneurysms: Treatment and Complications","value":9.4e-06,"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/T10196","display_name":"Pain Mechanisms and Treatments","value":5.8e-06,"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/T10094","display_name":"Epilepsy research and treatment","value":5.4e-06,"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/T10852","display_name":"Temporomandibular Joint Disorders","value":4.9e-06,"subfield":{"id":"https://openalex.org/subfields/3504","display_name":"Oral Surgery"},"field":{"id":"https://openalex.org/fields/35","display_name":"Dentistry"},"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":0.9049000144004822},{"id":"2778541695","wikidata":"https://www.wikidata.org/wiki/Q133823","display_name":"Migraine","score":0.8379743099212646},{"id":"126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","score":0.6389999985694885},{"id":"163864487","wikidata":"https://www.wikidata.org/wiki/Q6901461","display_name":"Monoclonal","score":0.5040368437767029},{"id":"159654299","wikidata":"https://www.wikidata.org/wiki/Q79460","display_name":"Antibody","score":0.38760000467300415}],"counts_by_year":[{"year":2023,"works_count":2,"oa_works_count":1,"cited_by_count":1},{"year":2024,"works_count":2,"oa_works_count":1,"cited_by_count":0},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":3},{"year":2026,"works_count":1,"oa_works_count":1,"cited_by_count":0}],"display_name_alternatives":["Frejvall, Ulf","Ulf Frejvall"],"block_key":"u frejvall","works_api_url":"https://api.openalex.org/works?filter=author.id:A5091990384","awards_count":0,"updated_date":"2026-11-06T12:48:51","created_date":"2023-05-23T00:00:00"}