参考文献:
[1] Snow J. On the mode of communication of cholera[J]. The Challenge of Epidemiology: Issues and Selected Readings. Washington, DC: World Health Organization, 1988: 42-45.
[2] Sept. Sept. 8, 1854: Pump Shutdown Stops London Cholera Outbreak[J]. Cholera Incl Haiti Cholera Disaster.
[3] Ralph R. Frerichs.Broad Street Pump Outbreak[EB/OL]. http://www.ph.ucla.edu/epi/snow/broadstreetpump.html
[4] 黄建始.现代医学侦探之父约翰.斯诺的故事[EB/OL]. http://blog.sina.com.cn/s/blog_5f88d7330100e8yz.html, 2009.
[5] 许锐恒.病因及其推断,从联系到因果[EB/OL]. http://www.cdcp.org.cn/gdsjbyfkzzx/gnwxx001bvn/201704/0a2043250669476f9220a9fad64c8a81.shtml, 2017.