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South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|August 20, 1988
An introduction to clinical epidemiologyL Epstein, J L Botha, D YachInternational Journal of Epidemiology|June 1, 1985
Mseleni joint disease in 1981: decreased prevalence rates, wider geographical location than before, and socioeconomic impact of an endemic osteoarthrosis in an underdeveloped community in South AfricaD Yach, J L BothaSocial Science & Medicine (1982)|January 1, 1988
The distribution of health needs and services in South AfricaJ L Botha, D Bradshaw, R Gonin, et al.International Journal of Epidemiology|June 1, 1990
Drop-out and newcomer bias in a community cardiovascular follow-up studyP L Jooste, D Yach, H J Steenkamp, et al.South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|July 31, 1982
Economic aspects of smoking in South AfricaD YachThe National Medical Journal of India|March 1, 1997
'Health-for-All' in the twenty-first century: a global perspectiveD YachSouth African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|February 20, 1988
Infant mortality rates in urban areas of South Africa, 1981-1985D YachSocial Science & Medicine (1982)|January 1, 1988
Tuberculosis in the Western Cape health region of South AfricaD YachSouth African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|July 18, 1987
Tuberculosis deaths in South Africa, 1980D YachPageof 116