Oliveira, J.; Dias, N.; Ferreira, T. M.; da Cunha, S.; Costa, D.; Côrte-Real, R.; Meliço-Silvestre, A. The Determination of Susceptibility to Measles, Rubella, Mumps and Chickenpox in Students of Health-Related Areas. Acta Med Port 1999, 12, 155-60.