1. Department of Obstetrics, The International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
2. Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, China.
3. Shanghai Municipal Key Clinical Specialty, Shanghai, China.
4. Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, the Netherlands.
5. Academic Center for Thyroid Diseases, Erasmus University Medical Center, Rotterdam, the Netherlands.