@article{liew_wang_2007,  title={Retinal vascular signs in diabetes and hypertension - review},  volume={51},  ISSN={0004-2730},  url={https://doi.org/10.1590/S0004-27302007000200027},  DOI={10.1590/S0004-27302007000200027},  number={2},  journal={Arquivos Brasileiros de Endocrinologia & Metabologia},  publisher={Sociedade Brasileira de Endocrinologia e Metabologia},  author={Liew, Gerald and Wang, Jie Jin},  year={2007},  month={Mar},  pages={352–362} }