@article{nobre_peres_moreira_leal_2017,  title={Clomiphene treatment may be effective in refractory episodic and chronic cluster headache},  volume={75},  ISSN={0004-282X},  url={https://doi.org/10.1590/0004-282X20170119},  DOI={10.1590/0004-282X20170119},  number={9},  journal={Arquivos de Neuro-Psiquiatria},  publisher={Academia Brasileira de Neurologia - ABNEURO},  author={Nobre, Maria Eduarda and Peres, Mario Fernando Prieto and Moreira, Pedro Ferreira and Leal, Antonio José},  year={2017},  month={Sep},  pages={620–624} }