1. Department of Pediatrics, College of Medicine, National Cheng Kung University, 138 Sheng-Li Road, Tainan, 70428, Taiwan. Tel: +886-6-235-3535; fax: +886-6-275-3083;
2. Department of Pediatrics, Sin-Lau Christian Hospital, Tainan, Taiwan
3. Department of Pediatrics, Chi Mei Hospital, Tainan, Taiwan