@article{assis_scaff_1976,  title={Familial myasthenia gravis: report of four cases},  volume={34},  ISSN={0004-282X},  url={https://doi.org/10.1590/S0004-282X1976000300001},  DOI={10.1590/S0004-282X1976000300001},  number={3},  journal={Arquivos de Neuro-Psiquiatria},  publisher={Academia Brasileira de Neurologia - ABNEURO},  author={Assis, José Lamartine de and Scaff, Milberto},  year={1976},  month={Sep},  pages={215–222} }