From the Department of Medicine, Division of Nephrology, Lankenau Hospital and Medical Research Center, Wynnewood, Pennsylvania.

From a panel held at the Annual Meeting of the ASAIO, New Orleans, 1993.

Reprint requests: Miles H. Sigler, MD, FACP, Suite 130, Lankenau Medical Bldg., West 100 Lancaster Avenue, Wynnewood, PA 19096.