Oliveira, J, S da Cunha, R Côrte-Real, L Sampaio, N Dais, and A Meliço-Silvestre. 1995. “ Mumps and Chickenpox Antibodies in a Population of Health Care Workers”. Acta Médica Portuguesa 8 (4). Lisbon, Portugal:206-16. https://doi.org/10.20344/amp.2693.