1 Department of Pediatrics (AF), Hospital Central do Funchal, Madeira; Department of Neuroradiology (BC, CC), Centro Hospitalar Lisboa Central, Lisbon; Neuropediatrics (CL), and Pediatric Intensive Care Unit (AC, MM, CE), Department of Pediatrics, Hospital Prof. Dr. Fernando Fonseca, Lisbon; Pediatric Intensive Care Unit (SL), and Department of Neuropediatrics (AP, AM), Hospital de Dona Estefânia, Centro Hospitalar Lisboa Central, Lisbon, Portugal.