Immediate analgesic effect of needling acupoints(bilateral De Qi vs unilateral De Qi) on primary dysmenorrhea: a multi-center, randomized, controlled trail

Wang Pei, Zhang Peng, Ma Liangxiao, Yuan Hongwen, Liu Yuqi, Chi Lin, Xin Siyuan, Hu Nijuan, Zhao Minyi, Zhu Jiang

Journal of Traditional Chinese Medicine . 2016, (06): 711 -717 .