Asthma mortality in children and adolescents of Brazil over a 20¿year period Raquel Reis Pitchon; Cristina Gonçalves Alvim; Cláudia Ribeiro de Andrade; Laura Maria de Lima Belizário Facury Lasmar; Álvaro Augusto Cruz; Adriana Pitchon dos Reis;

Low back pain in adolescents and association with sociodemographic factors, electronic devices, physical activity and mental health Thiago Paulo Frascareli Bento; Guilherme Porfirio Cornelio; Priscila de Oliveira Perrucini; Sandra Fiorelli Almeida Penteado Simeão; Marta Helena Souza de Conti; Alberto de Vitta;

Prevalence and impact of asthma in schoolchildren in the city of Caxias do Sul¿RS Daniel Zacaron; Cristian Roncada; Rossano Sartori Dal Molin; Marcus Herbert Jones; Paulo Condessa Pitrez;