We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEpidemiology of constipation (EPOC) study in the United States: relation of clinical subtypes to sociodemographic features.AuthorsStewart WF; Liberman JN; Sandler RS; Woods MS; Stemhagen A; Chee E; Lipton RB; Farup CEPublicationThe American journal of gastroenterology, 1999, Vol 94, Issue 12, p3530ISSN0002-9270Publication typearticleDOI10.1111/j.1572-0241.1999.01642.x