Clinic observation on efficacy of Maren Soft Capsule in prevention of constipation after anorectal operation Clinical observation of Maren Soft Capsule in treatment of stroke patients with constipation Studies on Laxative Function of Maren Soft Capsule Effect and safety of Maren Soft Capsule on constipation Clinical observation of stripping resection plus hemorrhoidal artery ligation columnar suture in treatment of mixed hemorrhoids and Maren Soft Capsule in prevention and treatment of constipation after operation Clinical observation on Maren Soft Capsule in treatment of antipsychotic drug-induced constipation