@article{mattos_2011,  title={Molecular polymorphisms of human blood groups: a universe to unravel},  volume={33},  ISSN={1516-8484},  url={https://doi.org/10.5581/1516-8484.20110005},  DOI={10.5581/1516-8484.20110005},  number={1},  journal={Revista Brasileira de Hematologia e Hemoterapia},  publisher={Associação Brasileira de Hematologia e Hemoterapia e Terapia Celular},  author={Mattos, Luiz Carlos de},  year={2011},  month={Feb},  pages={6–7} }