Screening for differentially-expressed proteins in ovary of primary dysmenorrheal mice with Xiangfu Siwu decoction administration using nano LC-LTQ-Orbitrap-MS/MS Effects and safety of varying doses of Guizhi Fuling capsule in patients with primary dysmenorrhea: a multi-center, randomized, double-blind, placebo-controlled clinical study Effects of Danggui Shaoyao Powder on oxytocin-induced in vivo uterine contractions and vasomotor factors of rats Research progress on pharmacological activities and clinical applications of Guizhi Fuling Capsule