CJCP     2022 24 (4):  377-381    ISSN: 1008-8830  CN: 43-1301/R Clinical efficacy of adaptive biofeedback training combined with oral administration of compound polyethylene glycol 4000-electrolyte powder in the treatment of children with outlet obstruction constipation: a prospective randomized controlled trial WANG Rui-Feng, ZHOU Fang, WANG Huan, YU Zhi-Dan, LI Xiao-Qin Department of Gastroenterology, Henan Children's Hospital/Children's Hospital Affiliated to Zhengzhou University/Zhengzhou Children's Hospital/Zhengzhou Key Laboratory of Children's Digestive Diseases, Zhengzhou 450018, China Received: 2021-12-01  Revised: null  Online: null Supporting info