Gonçalves, G., Tavares, F. and de Andrade, H. R. (1998) “A seroconversion study of the measles component of the MMR vaccine in adolescents of the town of Sabrosa”., Acta Médica Portuguesa. Lisbon, Portugal, 11(12), pp. 1079–84. doi: 10.20344/amp.2363.