@article{penna_2011,  title={Can studies where subjects have different follow up times be analyzed through binomial regression?},  volume={106},  ISSN={0074-0276},  url={https://doi.org/10.1590/S0074-02762011000300024},  DOI={10.1590/S0074-02762011000300024},  number={3},  journal={Memórias do Instituto Oswaldo Cruz},  publisher={Instituto Oswaldo Cruz, Ministério da Saúde},  author={Penna, Maria Lucia F},  year={2011},  month={May},  pages={383–384} }