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;

Chikungunya fever in hospitalized children and adolescents: clinical and epidemiological aspects in a region of northeastern Brazil Wládia Gislaynne de Sousa Tavares; Roberio Dias Leite; Denise Maria Christofolini;

Tuberculosis among young contacts of patients with multidrug-resistant pulmonary tuberculosis in a reference hospital Evelyn F. Rubin; Sheila C. Lucena; Marcela Bhering; Lorrayne Gonçalves; Fabiana Falcão; Margareth Dalcomo; Giovanni B. Migliori; Laura Saderi; Giovanni Sotgiu; Afrânio Kritski; Anna C.C. Carvalho;