1. Director, Bone and Mineral Laboratory, Henry Ford Hospital, Detroit, MI 48202.
2. Associate Professor of Medicine, Creighton University School of Medicine, Omaha, NE 68178.
3. Professor of Medicine, Vice President for Health Sciences, Creighton University, Omaha, NE 68178.
4. Professor of Medicine, Director of Endocrinology and Metabolism, Indiana University School of Medicine, Indianapolis, IN 46223.
5. Associate Professor of Medicine, Massachusetts General Hospital, Boston, MA 02114.
6. Senior Scientist, 405 Westwood Building, Bethesda, MD 20205.