@article{gunewardena_carter_mendis_1994,  title={Patterns of acquired anti-malarial immunity in Sri Lanka},  volume={89},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761994000600015},  DOI={10.1590/S0074-02761994000600015},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Gunewardena, D. M. and Carter, R. and Mendis, K. N.},  year={1994},  pages={63–65} }