Low, C., Thoon, K. C., Lin, R., Chua, A., Hishamuddin, P., Tay, J. and Cutter, J. (2013) “Possible nosocomial transmission of measles in unvaccinated children in a Singapore public hospital ”, Western Pacific Surveillance and Response, 3(4). doi: 10.5365/wpsar.2012.3.4.008.