Disorders of Fluids and Electrolytes

From the Department of Internal Medi­ cine, St. Elisabeth Hospital, Willemstad, Curaçao (K.B.); and the Division of Ne­ phrol ogy, Depart ment of Medicine, Leiden University Med ical Center, and Leiden University, Leiden (A.P.J.V.), and the De­ partment of Internal Medicine, Uni ver sity of Groningen, University Medical Cen ter Groningen, Groningen (R.O.B.G.) — both in the Netherlands. Address reprint requests to Dr. Berend at the De partment of Internal Medicine, St. Elisa beth Hos pi­ tal, Breedestraat 193, Willemstad, Curaçao, or at [email protected].