1. Division of Endocrinology; Oregon Health and Science University; Portland OR USA
2. Bone and Mineral Unit; Oregon Health and Science University; Portland OR USA
3. Oregon Institute of Occupational Health Sciences; Oregon Health and Science University; Portland OR USA
4. Division of Sleep Medicine; Brigham and Women's Hospital; Harvard Medical School; Boston MA USA
5. Research Institute; California Pacific Medical Center; San Francisco CA USA
6. San Francisco Coordinating Center; University of California San Francisco; San Francisco CA USA
7. Department of Epidemiology; Graduate School of Public Health; University of Pittsburgh; Pittsburgh PA USA
8. Maine Medical Center Research Institute; Scarborough; ME USA
9. Departments of Medicine and Neurology; Brigham and Women's Hospital; Harvard Medical School; Boston MA USA
10. Departments of Genetics and Development; Columbia University Medical Center; New York NY USA