1 Center for Population-Level Bioethics, and Departments of Health Behavior, Society & Policy (SPH) and Philosophy (SAS), Rutgers University, New Brunswick, New Jersey, USA.
2 Center for Communicable Disease Dynamics, Department of Epidemiology, and Departments of Immunology and Infectious Diseases, Harvard T. H. Chan School of Public Health, Boston, Massachusetts, USA.
3 Tropical Epidemiology Group, London School of Hygiene & Tropical Medicine, London, United Kingdom.