Clinical, laboratory and genetic features of Erdheim-Chester disease patients: analysis of a retrospective cohort of two reference centers in Latin America - Brandao, Antonio Adolfo Guerra Soares; Abdo, Andre Ramires Neder; Lage, Luis Alberto de Padua Covas; Fatobene, Giancarlo; Pereira, Juliana; Rocha, Vanderson Geraldo (Hematology, 2022)