%0 Journal Article
%T Postoperative Analgesic Effects of Different Doses of Epidural Hydromorphone Coadministered with Ropivacaine after Cesarean Section: A Randomized Controlled Trial
%A Hong Chen
%A Luyang Wang
%A Meijuan Yang
%A Xinzhong Chen
%A Yuwen Tang
%J Archive of "Pain Research & Management".
%D 2019
%R 10.1155/2019/9054538
%U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6421812/