@article{valeri_linhares_2012,  title={Pain in preterm infants: effects of sex, gestational age, and neonatal illness severity},  volume={5},  ISSN={1983-3288},  url={https://doi.org/10.3922/j.psns.2012.1.03},  DOI={10.3922/j.psns.2012.1.03},  number={1},  journal={Psychology & Neuroscience},  publisher={Pontificia Universidade Católica do Rio de Janeiro, Universidade de Brasília, Universidade de São Paulo},  author={Valeri, Beatriz Oliveira and Linhares, Maria Beatriz Martins},  year={2012},  month={Jan},  pages={011–019} }