1 Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand.
2 Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
3 Department of Developmental Biology, Harvard School of Dental Medicine, Harvard University, Boston, Massachusetts, USA.
4 St John's Institute of Dermatology (Guy's Campus), King's College London, London, UK.