Houatthongkham, Souphatsone, et al. “Trends in the Incidence of Acute Watery Diarrhoea in the Lao People’s Democratic Republic, 2009–2013”. Western Pacific Surveillance and Response, vol. 7, no. 3, Sept. 2016, https://doi.org/10.5365/wpsar.2016.7.2.006.