title: Unpublished clinical trials with sumatriptan.
authors.forename: Peer Carsten
authors.initials: PC
authors.lastname: Tfelt-Hansen
mesh_terms: D004345:Drug Industry; D004878:Ergotamine / Q000627:therapeutic use; D005060:Europe; D006801:Humans; D008881:Migraine Disorders / Q000188:drug therapy*; D017594:Publication Bias; D016032:Randomized Controlled Trials as Topic; D012042:Registries; D018170:Sumatriptan / Q000627:therapeutic use*; D016896:Treatment Outcome; D014662:Vasoconstrictor Agents / Q000627:therapeutic use*
chemical_list: D014662:Vasoconstrictor Agents; D018170:Sumatriptan; D004878:Ergotamine