1 Neurology Department, Hospital de Santo António, Centro Hospitalar do Porto, Largo Professor Abel Salazar, 4099-001, Porto, Portugal.
2 Internal Medicine Department, Hospital de Santo António, Centro Hospitalar do Porto, Porto, Portugal.
3 Hyperbaric Medicine Unit, Unidade Local de Saúde de Matosinhos, Porto, Portugal.
4 Neurology Department, Hospital de Santo António, Centro Hospitalar do Porto, Largo Professor Abel Salazar, 4099-001, Porto, Portugal. joanadamasio@chporto.min-saude.pt.