An evidence-based approach to the management of chronic constipation in North America.
D002908:Chronic Disease; D003248:Constipation / Q000175:diagnosis / Q000188:drug therapy* / Q000453:epidemiology; D019317:Evidence-Based Medicine / Q000379:methods*; D006801:Humans; D009656:North America / Q000453:epidemiology; D015995:Prevalence