1 Zhaoxia Huang is a Nurse Manager, Assistive Reproductive Medical Center of the Number 2 Affiliated Hospital, Wenzhou Medical College, Wenzhou, Zhejiang Province, Republic of China. Xiaohong Hou is an Attending Physician, Assistive Reproductive Medical Center of the Number 2 Affiliated Hospital, Wenzhou Medical College, Wenzhou, Zhejiang Province, Republic of China.