Clinical utility of PPPM and FPS-R to quantify post-tonsillectomy pain in children - Azevedo, Carolina Brotto de; Carenzi, Lucas Rodrigues; Queiroz, Danielle Leite Cunha de; Anselmo-Lima, Wilma Terezinha; Valera, Fabiana Cardoso Pereira; Tamashiro, Edwin (International Journal of Pediatric Otorhinolaryngology, 2014)