1. Down syndrome and recent demographic trends in Manitoba;Evans, J.A.; Hunter, A.G.W.; Hamerton, J.L.;J Med Genet,1978
2. The prevention of Down's syndrome;Piper, M.C.;McGill University, Ph. D thesis,1979
3. Down's syndrome in South Australia;Sutherland, G.R.; Clisby, SR, Bloor; G, Carter; R.F.;Med J Aust,1979
4. Differences between rates of trisomy 21 (Down's syndrome) and other chromosomal abnormalities diagnosed in livebirths and in cells cultured after 2nd trimester amniocentesis-suggested explanation and implications for genetic counseling and program planning;Hook, E.B.;Birth Defects; Sex differentiation and chromosomal abnormalities,1978
5. Maternal age and Down syndrome;Ferguson-Smith, M.A.;Lancet,1978