Major sperm bank

National Research Institute for Family Planning (Beijing)

Hebei Province Research Institute for Family Planning (Shijiazhuang, Hebei province)

Shanxi Province Research Institute for Family Planning Affiliated Hospital (Taiyuan, Shanxi province)

Inner Mongolia Autonomous Region Research Institute for Family Planning (Chifeng, Inner Mongolia)

Liaoning Province Maternal and Child Health Hospital (Shenyang, Liaoning province)

Jilin University First Hospital (Changchun, Jilin province)

Renji Hospital, Shanghai Jiaotong University School of Medicine (Shanghai)

Jiangsu Province Hospital (Nanjing, Jiangsu province)

Zhejiang Province Research Institute for Family Planning (Hangzhou, Zhejiang province)

Affiliated Hospital of Medical Sciences, Nanchang City (Nanchang, Jiangxi Province)

Shandong University Affiliated Reproduction Hospital (Jinan, Shandong province)

Zhengzhou University Third Hospital (Zhengzhou, Henan province)

Reproduction Medical Center, Tongji Medical College, Huazhong University of Science and Technology (Wuhan, Hubei province)

Reproductive and Genetic Hospital of CITIC-Xiangya (Changsha, Hunan province)

Guangdong Provincial Family Planning Specialist Hospital (Guangzhou, Guangdong province)

Sichuan University Huaxi Second Hospital (Chengdu, Sichuan province)

Shaanxi Province Maternal and Child Health Hospital (Xi'an, Shaanxi province)