[1] Univ Nova Lisboa, Ctr Hosp Lisboa Ocidental, NOVA Med Sch,Clin Insuficiencia Cardiaca, Fac Ciencias Med,Hosp Sao Francisco Xavier,Serv M, Lisbon, Portugal
[2] Univ Lisbon, Ctr Hosp Lisboa Norte, Hosp Santa Maria, Serv Cardiol,CCUL,Fac Med, Lisbon, Portugal
[3] Ctr Hosp Lisboa Ocidental, Hosp Santa Cruz, Serv Cardiol, Carnaxide, Portugal
[4] Ctr Hosp & Univ Coimbra, Hosp Univ Coimbra, Serv Cardiol, Coimbra, Portugal
[5] Ctr Hosp Leiria, Serv Cardiol, Leiria, Portugal
[6] Univ Porto, Clin Insuficiencia Cardiaca & Transplante, Ctr Hosp Sao Joao, Serv Cardiol,Fac Med, Porto, Portugal