@article{onocko-campos_díaz_dahl_leal_serpa junior_2017,  title={Methodological challenges in the use of focus groups with people with severe mental illness},  volume={33},  ISSN={0102-311X},  url={https://doi.org/10.1590/0102-311X00187316},  DOI={10.1590/0102-311X00187316},  number={6},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Onocko-Campos, Rosana Teresa and Díaz, Alberto Rodolfo Giovanello and Dahl, Catarina Magalhães and Leal, Erotildes Maria and Serpa Junior, Octavio Domont de},  year={2017},  pages={e00187316} }