Prevalence of constipation in cystic fibrosis patients: a systematic review of observational studies Marina A. Stefano; Rosana E. Poderoso; Jochen G. Mainz; Jose D. Ribeiro; Antonio F. Ribeiro; Elizete Aparecida Lomazi;

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;