Altemus LA. Frequency of incidence of malocclusion in American Negro children aged twelve to sixteen. Angle Orthod 1959; 29: 189-200.Search in Google Scholar
Emrich RE, Brodie AG, Blayney JR. Prevalence of Class I, Class II and Class III malocclusion (Angle) in an urban population. An epidemiological study. J Dent Res 1965; 44: 947-953.Search in Google Scholar
Kelly JE, Harvey CR. An assessment of the occlusion of the teeth of youths 12-17 years. Data from the National Health Survey. DHEW Publication No (HRA) 77-1644. United States Department of Health, Education and Welfare, Public Health Service. Series 11, Number 162, February 1977.Search in Google Scholar
Horowitz HS, Doyle J. Occlusal relations in children born and reared in an optimally fluoridated community II Clinical findings. Angle Orthod 1970; 40: 104-111.Search in Google Scholar
Garner LD, Butt MH. Malocclusion in Black Americans and Nyeri Kenyans. An epidemiologic study. Angle Orthod 1985; 55: 139-146.Search in Google Scholar
Woon KC, Thong YL, Kadir RA. Permanent dentition occlusion in Chinese, Indian and Malay groups in Malaysia. Aust Orthod J 1989; 11 (1): 45-48.Search in Google Scholar
Hong Kong Census Report, 1971. Census and Statistics Department, Hong Kong.Search in Google Scholar
Kinaan BK. Overjet and overbite distribution and correlation: a comparative epidemiological English-Iraqi study. Bri J Orthod 1985; 13: 79-86.Search in Google Scholar