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;

Analysis of the prevalence and influencing factors of hyperuricemia in children and adolescents aged 6¿17 years in northeastern Sichuan Province Xuemei Guo; Ningting Xiao; Xueming Jing; Zhennan Zhu; Heping Zhang;

Association between adolescents who are victims of bullying and weapon possession Maria Eduarda B. Silva; Jakelline C.S. Raposo; Anila T.L. Barbosa; Valdenice Menezes; Viviane Colares; Carolina da Franca; Fabiana de Godoy;