[1] Erasme Univ Hosp, B-1070 Brussels, Belgium
[2] Cleveland Clin Fdn, Cleveland, OH 44195 USA
[3] Univ Zurich Hosp, CH-8091 Zurich, Switzerland
[4] Mater Misericordiae Univ Hosp, Dublin 7, Ireland
[5] Baylor Coll Med, Houston, TX 77030 USA
[6] Methodist Hosp, Houston, TX 77030 USA
[7] Univ Minnesota, Minneapolis, MN USA
[8] Texas Childrens Hosp, Houston, TX 77030 USA
[9] Alfred Hosp, Prahran, Vic 3181, Australia
[10] Presbyterian Univ Hosp, Pittsburgh, PA 15213 USA