Wong, C. H., S. K. Chuang, W. H. Lam, H. Y. Lam, T. S. Lam, L. M. R. Ho, Y. H. Leung, and C. K. Y. Lam. “Investigation and Control of a Measles Outbreak at the Hong Kong Special Administrative Region International Airport, 2019”. Western Pacific Surveillance and Response, vol. 11, no. 2, June 2020, doi:10.5365/wpsar.2019.10.2.007.