1. Department of Pediatrics, Nanfang Hospital, Guangzhou, China.
2. Department of Pathology, Kori Hospital-Kansai Medical University, Neyagawa, Osaka, Japan.
3. Department of Stem Cell Disorders, Kansai Medical University, Moriguchi, Osaka, Japan.
4. Japan Immunoresearch Laboratories Co., Ltd. (JIMRO), Takasaki City, Gunma, Japan.