1 University of North Carolina Chapel Hill Project-China, Guangzhou 510095, China; University of North Carolina Chapel Hill, Institute of Global Health and Infectious Diseases, Chapel Hill, NC, USA. Electronic address: jdtucker@med.unc.edu.
2 Division of Health Sciences, Bioethics Centre, University of Otago, Dunedin, New Zealand.
3 School of Sociology and Anthropology, Sun Yat-sen University, Guangzhou, China.
4 Center for Applied Ethics and Department of Social Sciences, Fudan University, Shanghai, China.
5 Harvard Asia Center, Harvard University, Cambridge, MA, USA.