1. Weiyan Jian ( ) is a health economist at the Health Science Center, Peking University, in Beijing, China.
2. Kit Yee Chan is a research fellow at the University of Melbourne’s Nossal Institute for Global Health, in Australia. She is a visiting fellow at the Health Science Center, Peking University.
3. Daniel D. Reidpath is a professor of population health and director of public health at the School of Medicine and Health Sciences, Monash University, Sunway Campus (Malaysia).
4. Ling Xu is chief of the Division of Survey and Evaluation, Center for Health Statistics and Information, at the Chinese Ministry of Health, in Beijing.