1. State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing 400715, China
2. Department of Neurosurgery, Second Artillery General Hospital, Chinese People's Liberation Army, Beijing 100088, China
3. Chongqing Reproductive and Genentics Institute, Chongqing Obstetrics and Gynecology Hospital, Chongqing 400013, China