Zhoushan Dinghai Central HospitalOrganisationTrialsEffect of Probiotics on Preventing the Recurrence of Colonic Adenomas After Endoscopic Mucosal Resection in Patients With Chronic Gastritis: A Randomized, Double-Blind, Placebo-Controlled Trial ProtocolNo phase, Status unknown, 2026, 100 people, 14 Aug 2026, trialsearch.who.int