1. Renal Section, Albuquerque, New Mexico, U.S.A.
2. University of New Mexico School of Medicine, Albuquerque; Northwest Nephrology; Albuquerque, New Mexico, U.S.A.
3. Urology Section and Ambulatory Care Service, Albuquerque, New Mexico, U.S.A.
4. Veterans Affairs Medical Service, Albuquerque, New Mexico, U.S.A.
5. Spokane, Washington; New Mexico Artificial Kidney Center, Albuquerque, New Mexico, U.S.A.
6. Albuquerque; Lovelace Medical Center, Albuquerque, New Mexico, U.S.A.
7. Albuquerque; and Nephrology Associates, Albuquerque, New Mexico, U.S.A.