1. From the Department of Medicine, Johannesburg Hospital and University of the Witwatersrand, Johannesburg, South Africa, the Department of Medicine, Newark Beth Israel Medical Center, New Jersey Medical School, Newark, NJ, the Division of Reproductive Biology, University of California, Los Angeles, Torrance, CA, and the Department of Obstetrics and Gynaecology, University of Cape Town Medical School, Cape Town, South Africa (address reprint requests to Dr. Kew at the Department of Medicine, University of...