Niacin nutritional status in human immunodeficiency virus type 1 positive children - Tremeschin, M. H.; Monteiro, Jacqueline Pontes; Camelo Júnior, José Simon; Negrini, B. V.; Cervi, Maria Célia; Martinez, Francisco Eulógio; Vannucchi, Hélio; Contri, P. V.; Berchielli, E. M. (Congress of the European Society for Clinical Nutrition and Metabolism ESPEN, 2006)