Dr. Xi Chen is an assistant professor of public health and economics, and of faculty of arts and sciences at Yale University. Dr. Chen is also a faculty fellow at the Yale Global Health and the Yale Institution for Social and Policy Studies (ISPS). Dr. Chen serves as a consultant for United Nations University World Institute for Development Economics Research (UNU-WIDER) and an external reviewer for United Nations Research Institute for Social Development (UNRISD). He can be reached at xi.chen.edu@gmail.com.