1. Section of Endocrine Neoplasia & Hormonal Disorders (H.M.K., K.E.F.), The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030
2. The Department of Neurosurgery (I.E.M.), The University of Texas M. D. Anderson Cancer Center, Houston, Texas 77030
3. Medical Department M (Diabetes and Endocrinology) (A.F.), Aarhus Kommunehospital, Aarhus, DK-8000 Denmark