1. School of Nursing, University of Washington, Seattle, WA, USA
2. College of Nursing, University of Iowa, Iowa, IA, USA
3. School of Public Health, University of Washington, Seattle, WA, USA
4. Fred Hutchinson Cancer Research Center, Seattle, WA, USA
5. School of Medicine, University of Missouri, Columbia, MO, USA
6. School of Nursing, University of Pennsylvania, Philadelphia, PA, USA