Liu X, Miao H, Behrman JR, Hannum E, Liang Z, Zhao Q. The Asian Games, air pollution and birth outcomes in South China: an instrumental variable approach. Econ Hum Biol. 2022 Jan;44:101078. doi: 10.1016/j.ehb.2021.101078
Kim D, Lauria DT, Poulos C, Dong B, Whittington D. Effect of travel distance on household demand for typhoid vaccines: implications for planning. Int J Health Plann Manage. 2013 Mar 12;Advance Online.