1. Section on Endocrine Physiology, Developmental Endocrinology Branch, National Institute of Child Health and Human Development (M.N., G.A.), and Pulmonary/Critical Care Medicine Branch, National Heart, Lung, National Institutes of Health, Bethesda, Maryland 20892;
2. Department of Psychiatry, University of Cincinnati (J.K.), Cincinnati, Ohio 45267
3. Blood Institute (V.M.), National Institutes of Health, Bethesda, Maryland 20892;