by Vermaak, J.C., de Kock, M.A. & Ellis, J.C.
Published in South African medical journal (01.03.1975)

by De Kock, J.M., De Kock, J.C., De Kock, C.
Published in Suid-Afrikaanse tydskrif vir natuurwetenskap en tegnologie (01.09.2001)

by Taylor, D.R., Sears, M.R., Jenkins, M.M., De Kock, J.C., Palmer, J.B.D.
Published in The Lancet (British edition) (16.02.1991)

by Jenkins, M.M., Hilton, C.J., De Kock, J.C., Palmer, J.B.D.
Published in The Lancet (British edition) (13.04.1991)

by TAYLOR, D. R, SEARS, M. R, JENKINS, M. M, DE KOCK, J. C, PALMER, J. B. D
Published in The Lancet (British edition) (16.02.1991)

by Vermaak, J.C., de Kock, M.A. & Joubert, J.R.
Published in South African medical journal (23.12.1972)