1. Division in Anatomy and Developmental Biology; Department of Oral Biology; BK21 PLUS Project; Oral Science Research Center; Yonsei University College of Dentistry; Seoul Korea
2. Section of Pediatric Dentistry; Department of Oral Growth and Development; Fukuoka Dental College; Fukuoka Japan
3. Oral Biosciences; Faculty of Dentistry; The University of Hong Kong; Hong Kong SAR