B. Bethlehem

Aspergillus pneumonia--a cluster of four cases in an intensive care unit.

C. Block, J. Kallenbach, H. Koornhof, 1977, South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde.

The monitoring of heparin activity during extracorporeal circulation.

E. Gomperts, J. Hockley, B. Bethlehem, 1977, South African medical journal = Suid-Afrikaanse tydskrif vir geneeskunde.