1. Cardiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Dr Reinaldo dos Santos, Carnaxide 2790-134, Portugal
2. Nova Medical School, Campo Mártires da Pátria 130, 1169-056 Lisboa, Portugal
3. Cardiothoracic Surgery Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Dr Reinaldo dos Santos, Carnaxide 2790-134, Portugal