Sengkeopraseuth, Bounthanom, et al. “Analysing the Characteristics of a Measles Outbreak in Houaphanh Province to Guide Measles Elimination in the Lao People’s Democratic Republic”. Western Pacific Surveillance and Response, vol. 9, no. 3, July 2018, https://doi.org/10.5365/wpsar.2017.8.1.012.