[1] Pisa Univ Hosp, Div Cardiol, Pisa, Italy
[2] Scuola Super Sant Anna, Pisa, Italy
[3] Fdn Toscana G Monasterio, Pisa, Italy
[4] Massachusetts Gen Hosp, Boston, MA 02114 USA
[5] Brain Inst Clin Res, Boston, MA USA
[6] Univ Otago, Dunedin, New Zealand
[7] Natl Univ Heart Ctr, Singapore, Singapore
[8] Natl Univ Singapore, Singapore, Singapore
[9] Univ Med Ctr Groningen, Groningen, Netherlands
[10] IRCCS Mario Negri, Milan, Italy
[11] Univ Minnesota, Minneapolis, MN 55455 USA
[12] VA Med Ctr, Minneapolis, MN USA
[13] Oslo Univ Hosp, Oslo, Norway
[14] Univ Tromso, Tromso, Norway
[15] Maastricht Univ Med Ctr, Maastricht, Netherlands
[16] Hosp Badalona Germans Trias & Pujol, Badalona, Spain
[17] Fukushima Med Univ, Fukushima, Japan
[18] Copenhagen Univ Hosp, Copenhagen, Denmark
[19] Uppsala Univ, Uppsala, Sweden
[20] Wilhelminespital, Vienna, Austria
[21] Sigmund Freud Univ, Sch Med, Vienna, Austria
[22] Univ Auckland, Auckland, New Zealand
[23] Changi Gen Hosp, Singapore, Singapore
[24] Tan Tock Seng Hosp, Singapore, Singapore
[25] Khoo Teck Puat Hosp, Singapore, Singapore
[26] Singapore Gen Hosp, Singapore, Singapore
[27] Gisborne Hosp, Gisborne, New Zealand