Nir Eyal is the inaugural Henry Rutgers Professor of Bioethics in Rutgers University's department of philosophy and the Rutgers school of public health's department of health behavior, society and policy, as well as the founder and director of the Rutgers Center for Population-Level Bioethics. He is writing, among other things, on egalitarianism, consequentialism, health resource rationing, and ethical issues in the delivery of care in resource-poor settings. Samia Hurst is a physician bioethicist, ethics consultant, and professor of Bioethics at Geneva University's medical school in Switzerland, where she chairs the Institute for Ethics, History, and the Humanities, and the Department of Community Health and Medicine. She is a member of the Senate at the Swiss Academy of Medical Sciences and of the Swiss National Advisory Commission on Biomedical Ethics. Her research focuses on fairness in clinical practice and the protection of vulnerable persons. Christopher Murray is the Chair and Professor of Health Metrics Sciences and Director of the Institute for Health Metrics and Evaluation (IHME) at the University of Washington. He is a founder of the Global Burden of Disease approach, co-authoring the original study in the 1990s and bringing it to IHME in 2007. From 1998-2003 he served as the Executive Director of the Evidence and Information for Policy Cluster at the WHO. Andrew Schroeder is an associate professor of philosophy at Claremont McKenna College. His research covers topics in ethics, political philosophy, and the philosophy of science--especially questions that lie at the intersection of those fields. Daniel Wikler is Mary B. Saltonstall Professor of Ethics and Population Health in the Department of Global Health at the Harvard T.C. Chan School of Public Health. He earlier served as the World Health Organization's first "staff ethicist", working alongside Global Burden of Disease staff. His publications over four decades address ethical dimensions of population and global health, including health inequalities, the attribution of responsibility for health, priority-setting in health systems, and explorations of ethical issues arising in a number of fields of health research and practice.