Affiliation: | 1. Section on Biochemistry of Cell Regulation, Laboratory of Biochemical Pharmacology, National Institute of Arthritis, Metabolism, and Digestive Diseases, National Institutes of Health, Bethesda, Maryland 20014, U.S.A.;2. Centro di Endocrinologia ed Oncologia Sperimentale del C.N.R., Naples, Italy;3. Départment de Clinique et de Sémiologie Médicales, Institut de Médecine, Université de Liège, B4000, Liège, Belgium |