Understanding the natural history of selective IgA deficiency Nayara Maria Furquim Nasser; Antonio Carlos Pastorino; Thais Costa Lima de Moura; Beni Morgenstern; Mayra de Barros Dorna; Ana Paula Beltran Moschione Castro;

Physical activity and quality of life of children and adolescents with juvenile idiopathic arthritis, juvenile systemic lupus erythematosus and juvenile dermatomyositis during the COVID-19 pandemic Renata Soares; Fabiana de Carvalho Silva; Jade Dib Fernandez; Melissa Fraga; Maria Teresa Terreri; Claudio Arnaldo Len;

Analysis of complications related to diabetic ketoacidosis in pediatric patients at a University Hospital: a cross-sectional study Caroline Quilice Naccarato; Nathalia Azevedo; Raphael Del Roio Liberatore;