Salwen, Walter A Effect of four-day psyllium supplementation on bowel preparation for colonoscopy:A prospective double blind randomized trial [ISRCTN76623768]. [electronic resource] - BMC gastroenterology Feb 2004 - 2 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1471-230X Standard No.: 10.1186/1471-230X-4-2 doi Subjects--Topical Terms: Cathartics--administration & dosageColonoscopyDouble-Blind MethodFemaleHumansMaleMiddle AgedPolyethylene Glycols--administration & dosageProspective StudiesPsyllium--administration & dosageTherapeutic Irrigation