@article{lucon_lucon_pasqualoto_srougi_2007,  title={Paternity after vasectomy with two previous semen analyses without spermatozoa},  volume={125},  ISSN={1516-3180},  url={https://doi.org/10.1590/S1516-31802007000200011},  DOI={10.1590/S1516-31802007000200011},  number={2},  journal={Sao Paulo Medical Journal},  publisher={Associação Paulista de Medicina - APM},  author={Lucon, Marcos and Lucon, Antonio Marmo and Pasqualoto, Fabio Firmbach and Srougi, Miguel},  year={2007},  month={Mar},  pages={122–123} }