1. The effect of early intervention of skeletal pattern in Class II malocclusion: a randomized clinical trial;Tulloch;Am J Orthod Dentofac Orthop,1997
2. The present role of the general practitioner in orthodontics (Figure 1) based on Burlington Orthodontic Research Center report Number 3, 1958;Woodside;Dent Clin North Am,1968
3. Prevalence of malocclusion in children aged 14-18 years;Massler;Am J Orthod,1951
4. Human Relations;Goffman,1957
5. Changes in untreated Class II type malocclusion;Frohlich;Angle Orthod,1962