1. Department of Medicine, Division of Endocrinology, University of Michigan, Ann Arbor, Michigan.
2. VA Outcomes Group, Department of Veterans Affairs Medical Center, White River Junction, Vermont.
3. Section of Otolaryngology, Geisel School of Medicine at Dartmouth, Dartmouth College, Lebanon, New Hampshire.
4. The Dartmouth Institute for Health Policy and Clinical Practice, Dartmouth College, Lebanon, New Hampshire.