@article{guzman_kouri_bravo_soler_martinez_1991,  title={Sequential infection as risk factor for dengue hemorrhagic fever/dengue shock syndrome (DHF/DSS) during the 1981 dengue hemorrhagic cuban epidemic},  volume={86},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02761991000300011},  DOI={10.1590/S0074-02761991000300011},  number={3},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Guzman, Maria G. and Kouri, Gustavo and Bravo, Jose and Soler, Maritza and Martinez, Eric},  year={1991},  month={Jul},  pages={367–367} }