摘要篇首: The human endocrine system normally functions in a balanced physiological state. Any excess or deficiency will cause an endocrine imbalance and result in hyper-or hypo-function, requiring readjustment by hormone suppression or supplementation in order to reestablish a normal physiological balance.
作者单位Department of Obstetrics and Gynecology, Peking Union Hospital, Peking Union Medical College, Chinese Academy of Medical Science, Beijing 1000730, China[1]National Research Institute for Family Planning, Beijing 100081, China[2]Reproduction and Genetic Center, First Affiliated Hospital of Peking University, Beijing 100034, China[3]