title: Headaches and transient cerebral ischemia:comments on Welch's report.
mesh_terms: D002560:Cerebrovascular Circulation; D006261:Headache / Q000209:etiology; D006801:Humans; D002546:Ischemic Attack, Transient / Q000150:complications*; D008297:Male; D008881:Migraine Disorders / Q000209:etiology*; D018377:Neurotransmitter Agents / Q000378:metabolism
chemical_list: D018377:Neurotransmitter Agents