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American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics|March 1, 1993
A tensor analysis to evaluate the effect of high-pull headgear on Class II malocclusionsP Ngan, J Scheick, M FlormanSeminars in Orthodontics|May 9, 1998
Longitudinal evaluation of growth changes in Class II division 1 subjectsP W Ngan, E Byczek, J ScheickPageof 1