A Commentary on “Effective Dose of Epidural Hydromorphone for Analgesia Following Caesarean Section in Using Modified Dixon Sequential Method” [Response to Letter]

Qiao-Qiao Liu,1,* Mao Mao,1,* Ning-Hua Lin,2,* Chen-Yang Xu,1,* Qian Li,1 Chang-Shuo Jiang,1 Shan-Wu Feng,1 Hong-Mei Yuan1 1Department of Anesthesiology, Women’s Hospital of Nanjing Medical University, Nanjing Women and Children’s Healthcare Hospital, Nanjing, 210004, People’s Republic of China; 2Department of Anesthesiology, Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, 210008, People’s Republic of China*These authors contributed equally to this workCorrespondence: Shan-Wu Feng; Hong-Mei Yuan, Department of Anesthesiology, Women’s Hospital of Nanjing Medical University, Nanjing Women and Children’s Healthcare Hospital, No. 123, Tianfei Lane, Mochou Road, Nanjing, Jiangsu, People’s Republic of China, Email [email protected]; [email protected]