1 Interventional Radiology Unit, Centro Hospitalar Universitário de Lisboa Central (CHULC), Saint Louis Hospital, R. Luz Soriano 182, 1200-249, Lisbon, Portugal. tiagobilhim@hotmail.com.
2 Faculdade de Ciências Médicas, Nova Medical School, Universidade Nova de Lisboa, Lisbon, Portugal. tiagobilhim@hotmail.com.
3 Department of Diagnostic and Interventional Radiology, Klagenfurt State Hospital, Klagenfurt, Austria.