1. Department of Psychiatry; Amekudai Hospital; Okinawa
2. ; Department of Pediatrics; The Jikei University School of Medicine; Tokyo
3. ; Institute of DNA Medicine; The Jikei University School of Medicine; Tokyo
4. ; Department of Pediatrics and Child Health; Kurume University School of Medicine; Kurume
5. ; Department of Physiological Chemistry and Metabolism, Graduate School of Medicine; The University of Tokyo; Tokyo Japan