Dini, A. P.; Fugulin, F. M. T.; Veríssimo, M. D. L. Ó R.; Guirardello, E. de B. Pediatric Patient Classification System: Construction and Validation of Care Categories. Rev. Esc. Enferm. USP 2011, 45 (3), 575-580. https://doi.org/10.1590/S0080-62342011000300004.