Acknowledgement
We thank Guangliang Shan, PhD, from the Department of Epidemiology and Statistics, Chinese Academy of Medical Sciences & Peking Union Medical College, who contributed to the experimental design and conduct. We thank Jie Yi, MD, Bo Xiao, MD, Shuang Ma, MD, and Wen Chen, MD, who contributed to the ERAS protocol design and implementation. They are all from the Department of Anesthesiology, Peking Union Medical College Hospital. All of the authors received no compensation for their contributions. We wish to thank all of the women whose participation made this study possible, and we state that no participant was compensated for her contribution. We thank LetPub (www.letpub.com) for its linguistic assistance during the preparation of this manuscript.