@article{meenakumari_agarwal_krishna_pandey_2004,  title={Effects of metformin treatment on luteal phase progesterone concentration in polycystic ovary syndrome},  volume={37},  ISSN={0100-879X},  url={https://doi.org/10.1590/S0100-879X2004001100007},  DOI={10.1590/S0100-879X2004001100007},  number={11},  journal={Brazilian Journal of Medical and Biological Research},  publisher={Associação Brasileira de Divulgação Científica},  author={Meenakumari, K.J. and Agarwal, S. and Krishna, A. and Pandey, L.K.},  year={2004},  month={Nov},  pages={1637–1644} }