@article{kara_ceri_2017,  title={Vitamin D level in patients with pterygium},  volume={80},  ISSN={0004-2749},  url={https://doi.org/10.5935/0004-2749.20170056},  DOI={10.5935/0004-2749.20170056},  number={4},  journal={Arquivos Brasileiros de Oftalmologia},  publisher={Conselho Brasileiro de Oftalmologia},  author={Kara, Necip and Ceri, Seda},  year={2017},  month={Jul},  pages={229–233} }