The comparison of different drip cholangiography: a randomised trial - Wang, Na; Zhang, Shuhong; Zhang, Xi; Zhang, Xiangguo; Luo, Baohua; Zhao, Chengsi; Bao, Dongmei; Xiao, Haijing; Cao, Ying (Annals of Palliative Medicine; Vol 10, No 10 (October 31, 2021): Annals of Palliative Medicine, 2021)