Soh, Jen, Sandham, Andrew, and Chan, Yiong (2005) Malocclusion severity in Asian men in relation to malocclusion type and orthodontic treatment need. American Journal of Orthodontics and Dentofacial Orthopedics, 128 (5). pp. 648-652.

Soh, Jen, Sandham, Andrew, and Chan, Yiong Huak (2005) Occulsal status in Asian male adults: prevalence and ethnic variation. Angle Orthodontist, 75 (5). pp. 814-820.