@article{article13691b9b,
title   = {Measles antibody levels in a vaccinated population in Brazil},
author = {Cox, M. J. and Azevedo, R. S. and Massad, Eduardo and Fooks, A. R. and Nokes, D. J.},
year = {1998},
doi = {10.1016/s0035-9203(98)90760-x},
journal   = {Transactions of the Royal Society of Tropical Medicine and Hygiene}
}