[1] St Georges NHS Trust, London, England
[2] St Georg Hosp, D-011 Hamburg, Germany
[3] Tel Aviv Univ, Chaim Sheba Med Ctr, Tel Hashomer, Israel
[4] Royal Sussex Cty Hosp, Brighton BN2 5BE, E Sussex, England
[5] Kercoff Heart Ctr, Bad Nauheim, Germany
[6] Hop Rangueil, Toulouse, France
[7] Hop Cardiol, Lille, France
[8] Univ Antwerp Hosp, Antwert, Belgium
[9] McGill Univ, Royal Victoria Hosp, Ctr Hlth, Montreal, PQ H3A 1A1, Canada
[10] Royal Brompton Hosp, London SW3 6LY, England
[11] Univ Hosp Leipzig, Leipzig, Germany
[12] Inst Diagnost, Santa Fe, Argentina
[13] Sheba Hosp, IL-110 Tel Aviv, Israel
[14] Univ Leipzig, Ctr Heart, Leipzig, Germany
[15] St Georges NHS Trust, London, England
[16] St George Hosp, London, Plumtree Nottin, England
[17] St George Hosp, London, England