1. Department of Epidemiology, University of Washington School of Public Health, Seattle, WA 98195, USA
2. Epidemiology Program, Fred Hutchinson Research Cancer Research Center, Seattle, WA 98133, USA
3. Clinical Research Division, Fred Hutchinson Cancer Research Center, Seattle, WA 98133, USA
4. Seattle Cancer Care Alliance, Seattle, WA 98133, USA
5. University of Washington School of Medicine, Division of Medical Oncology, Seattle, WA 98195, USA
6. University of Washington School of Medicine, Department of Neurology & University of Washington Sleep Medicine Center, Seattle, WA 98195, USA