@article{multigner_oliva_2002,  title={Secular variations in sperm quality: fact or science fiction?},  volume={18},  ISSN={0102-311X},  url={https://doi.org/10.1590/S0102-311X2002000200004},  DOI={10.1590/S0102-311X2002000200004},  number={2},  journal={Cadernos de Saúde Pública},  publisher={Escola Nacional de Saúde Pública Sergio Arouca, Fundação Oswaldo Cruz},  author={Multigner, Luc and Oliva, Alejandro},  year={2002},  month={Mar},  pages={403–412} }