1. Department of Medicine, Tripler Army Medical Center , Honolulu, HI 96859, USA
2. Rocky Vista University College of Osteopathic Medicine , Denver, CO 80112, USA
3. School of Medicine, Uniformed Services University of the Health Sciences , Bethesda, MD 20814, USA
4. Department of Medicine, Division of Endocrinology Service, Tripler Army Medical Center , Honolulu, HI 96859, USA