[1] Clin Univ Pamplona, Pamplona, Spain
[2] Clin Univ Hosp, HT Unit, Santiago De Compostela, Spain
[3] Alcaniz Hosp, HT Unit, Zaragoza, Spain
[4] Canada HC, HT Unit, Almeria, Spain
[5] Clin Univ Hosp, Zaragoza, Spain
[6] Cardiovasc Res Unit, Orden Huelva, Spain
[7] Peset Hosp, Valencia, Spain
[8] Galdakao Hosp, HT Unit, Galdakao, Spain
[9] Igualada Hosp, Barcelona, Spain
[10] Gen Univ Hosp, Alicante, Spain
[11] Gen Univ Hosp, Valladolid, Spain
[12] Rio Orlega Hosp, Valladolid, Spain
[13] Cecilio Hosp, HT Unit, Granada, Spain
[14] Reina Sofia Hosp, Tudela, Spain
[15] Hosp La Paz, Madrid, Spain