Failure of intravenous immunoglobulin to prevent congenital heartblock: Findings of a multicenter, prospective, observational study

Pisoni, Cn; Brucato, A; Ruffatti, A; Espinosa, G; Cervera, R; Belmonte Serrano, M; Sánchez Román, J; García Hernández, Fg; Tincani, Angela; Bertero, Mt; Doria, A; Hughes, Gr; Khamashta, Ma