title: Cimetidine maintenance: How long?
mesh_terms: D002927:Cimetidine / Q000008:administration & dosage* / Q000627:therapeutic use; D004381:Duodenal Ulcer / Q000517:prevention & control*; D006146:Guanidines / Q000008:administration & dosage*; D006801:Humans; D012008:Recurrence; D013997:Time Factors
chemical_list: D006146:Guanidines; D002927:Cimetidine