Auricular acupressure promotes uterine involution after cesarean section: A randomized controlled trial oleh Shu-xin Wang, Jing-chun Zeng, Ting Li, Wan-lan Zhang, Yan-fang Li, Run-jin Zhou, Zi-jun Liu, Yu-ling Liu, Xun Zhuang, Rui Zhang, Li-ming Lu, Guo-hua Lin