title: Playing with open cards.
authors.affiliation: Klaus Bielefeldt, M.D., Ph.D. University of Pittsburgh Department of Medicine Pittsburgh, PA 15213.
authors.forename: Klaus
authors.initials: K
authors.lastname: Bielefeldt
mesh_terms: D002400:Cathartics / Q000627:therapeutic use*; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D003248:Constipation / Q000175:diagnosis / Q000453:epidemiology / Q000628:therapy*; D004032:Diet; D019317:Evidence-Based Medicine; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014481:United States / Q000453:epidemiology
chemical_list: D002400:Cathartics