title: Defecation and the pathophysiology of constipation.
mesh_terms: D000328:Adult; D000368:Aged; D002648:Child; D003248:Constipation / Q000209:etiology / Q000503:physiopathology*; D003672:Defecation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged