1. Oncology Department, Lombardi Comprehensive Center, Georgetown University , Washington, DC , USA
2. Sociology Department, University of York , Heslington, York , UK
3. Centre for Health Law, Policy and Ethics, University of Ottawa , Ottawa, Ontario , Canada
4. Department of Epidemiology, University of Michigan School of Public Health , Ann Arbor, MI , USA
5. Department of Health Management and Policy, University of Michigan School of Public Health , Ann Arbor, MI , USA
6. Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina , Charlestown, SC , USA