Development and multicenter external validation of a novel prediction model for inadequate bowel preparation before colonoscopy. - Weiyi Wang; Libo Tong; Shiyang Li; Wei He; Jinyuan Huang; Xiaofeng Liu; Cui Wang; Junqi Xia; Xingshun Qi; Caiping Song (BMC Medical Informatics Decis. Mak., 2026)