Why are children different in their moderate¿to¿vigorous physical activity levels? A multilevel analysis Sara Pereira; Ana Reyes; Marcos A. Moura¿Dos¿Santos; Carla Santos; Thayse N. Gomes; Go Tani; Olga Vasconcelos; Tiago V. Barreira; Peter T. Katzmarzyk; José Maia;

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;

Vitamin D deficiency in pediatric patients using antiepileptic drugs: systematic review with meta¿analysis Cíntia Junges; Tania Diniz Machado; Paulo Ricardo Santos Nunes Filho; Rudimar Riesgo; Elza Daniel de Mello;