1. Hongqiao International Institute of Medicine, Faculty of Public Health, Shanghai Jiao Tong University School of Medicine; Shanghai 200025 China
2. Department of Hematology; Tong Ren Hospital Affiliated to Shanghai Jiaotong University School Of Medicine; Shanghai 200336 China
3. Department of Endocrinology; Tong Ren Hospital Affiliated to Shanghai Jiaotong University School Of Medicine; Shanghai 200336 China
4. Division of Genetics and Mutagenesis; National Institute of Health Sciences; Setagaya-ku Tokyo 158-8501 Japan