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;

Distal intestinal obstruction syndrome: a diagnostic and therapeutic challenge in cystic fibrosis Natascha S. Sandy; Lilian H.P. Massabki; Aline C. Gonçalves; Antonio F. Ribeiro; Jose D. Ribeiro; Maria de Fátima C.P. Servidoni; Elizete A. Lomazi;

COVID¿19 and obesity in childhood and adolescence: a clinical review Carlos Alberto Nogueira¿de¿Almeida; Luiz A. Del Ciampo; Ivan S. Ferraz; Ieda R.L. Del Ciampo; Andrea A. Contini; Fábio da V. Ued;