1. Division of Nephrology (R.J.J., Y.Y.S., L.G.S.-L., M.Sha., M.Se., R.J.G., M.Shi., C.R., T.N.), University of Florida, Gainesville, Florida 32620-0224
2. Division of Nephrology (S.E.P.-P.), Mateo Orfila Hospital, 07703 Minorca (Balearic Islands), Spain
3. Division of Nephrology (J.M.), The Ludwig Rydygier Medical University, 85-067 Bydgoszcz, Poland
4. Department of Nephrology (L.G.S.-L.), Instituto Nacional de Cardiología Ignacio Chávez, 14080 Mexico City, Mexico
5. Division of Pediatric Nephrology (D.I.F.), Baylor College of Medicine, Houston, Texas 77030
6. Retired Professor (R.J.G.), Torrance, California