Primary hyperparathyroidism as the first clinical manifestation of multiple endocrine neoplasia type 2A in a 5-year-old child - Magalhães, Patrícia Künzle Ribeiro; Antonini, Sonir Roberto Rauber; Paula, Francisco José Albuquerque de; Freitas, Luiz Carlos Conti de; Maciel, Léa Maria Zanini (Thyroid, 2011)