Kalk W J, Cleaton-Jones P E, Allwood C W, Cooper P A, Mokhachane M, Feldman C, Hofmeyr G J, Lownie M A, Lucas M, Mark S, McKendrick B W, Penn C, Robertson B, Saadia R, Segal I, Skeen A S, van Gelderen C J, Wadee A A, Kriel J R, Broekman R, Jenkins T, Price M, Beckett G C, Penn C, Wright A
S Afr Med J. 1997 Jun;87(6):775-6.
