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2. Evaluation of preventive and interceptive orthodontic treatment between three and eighteen years of age;Popovich,1975
3. Ricketts on early treatment (part 1) interview;Ricketts;J Clin Orthod,1979
4. Early dentofacial features of Class II malocclusion;Baccetti;Am J Orthod Dentofacial Orthop,1997
5. Influences on outcome of early treatment for Class II malocclusion;Tulloch;Am J Orthod Dentofacial Orthop,1997