Bian, Z X Chinese herbal medicine for functional constipation: a randomised controlled trial. [electronic resource] - Hong Kong medical journal = Xianggang yi xue za zhi Dec 2013 - 44-6 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1024-2708 Subjects--Topical Terms: AdolescentAdultAgedConstipation--drug therapyDrugs, Chinese Herbal--therapeutic useHumansMiddle AgedProspective StudiesTreatment Outcome