title: Therapeutic gain or therapeutic ratio?
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Goadsby
authors.forename: Michel D
authors.initials: MD
authors.lastname: Ferrari
authors.forename: Richard B
authors.initials: RB
authors.lastname: Lipton
mesh_terms: D003627:Data Interpretation, Statistical; D006801:Humans; D008881:Migraine Disorders / Q000188:drug therapy*; D010919:Placebos / Q000627:therapeutic use; D016032:Randomized Controlled Trials as Topic; D017366:Serotonin Receptor Agonists / Q000627:therapeutic use*
chemical_list: D010919:Placebos; D017366:Serotonin Receptor Agonists