1. International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, P.R. China.
2. Institute of Embryo-Fetal Original Adult Disease Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai, P.R. China.
3. Department of Internal Medicine, Academic Center for Thyroid Diseases, Erasmus Medical Center, Rotterdam, The Netherlands.