title: Letter: Nocturnal acid secretion and metiamide.
mesh_terms: D002940:Circadian Rhythm; D004569:Electroencephalography; D005750:Gastric Juice / Q000378:metabolism*; D006634:Histamine H1 Antagonists / Q000494:pharmacology; D006801:Humans; D012890:Sleep; D013270:Stomach / Q000187:drug effects / Q000502:physiology
chemical_list: D006634:Histamine H1 Antagonists