AGynecology of Traditional Chinese Medicine, Panyu Maternal and Child Care Service Centre (Panyu He Xian Memorial Hospital), Guangzhou City, Guangdong Province511442, China.

BDepartment of Gynecology, Guangzhou Huadu District Maternal and Child Care Service Centre, Guangzhou City, Guangdong Province510800, China.

CDepartment of Gynecology, First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou City, Guangdong Province510405, China.

DDepartment of TCM Gynecology, Guangzhou Women and Children’s Medical Center, Guangzhou City, Guangdong Province510623, China.

EDepartment of Women’s Health Care, Guangdong Maternal and Child Health Hospital, Guangzhou City, Guangdong Province511442, China.