1. Department of Clinical Laboratory, The People’s Liberation Army Joint Service Support Unit 940 Hospital, Lanzhou, China
2. The Second Hospital of Lanzhou University, Lanzhou, China
3. Department of Medical Laboratory, Qinghai Provincial People’s Hospital, Xining, China
4. The Second Medical Centre of the Chinese People’s Liberation Army General Hospital, Beijing, China
5. The First People’s Hospital of Baiyin, China
6. Department of Obstetrics and Gynaecology, Reproductive Medicine Centre, The First Affiliated Hospital of Anhui Medical University, Anhui, China
7. Department of Haematology, Nanjing Drum Tower Hospital, Nanjing, China
8. The Affiliated Lianyungang Oriental Hospital of Xuzhou Medical University, Xuzhou, China