1. Research Center of Combine Traditional Chinese and Western Medicine, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou 646000, Sichuan, China
2. College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China
3. Department of Obstetrics and Gynecology, Affiliated Traditional Medicine Hospital, Southwest Medical University, Luzhou 646000, Sichuan, China