@article{hackney_machado_2012, title={Hormonal status, creatine kinase and soccer: a need for research}, volume={56}, ISSN={0004-2730}, url={https://doi.org/10.1590/S0004-27302012000900014}, DOI={10.1590/S0004-27302012000900014}, number={9}, journal={Arquivos Brasileiros de Endocrinologia & Metabologia}, publisher={Sociedade Brasileira de Endocrinologia e Metabologia}, author={Hackney, Anthony C. and Machado, Marco}, year={2012}, month={Dec}, pages={683–685} }