[1] Tufts Med Ctr, Boston, MA 02111 USA
[2] Univ Colorado Hosp, Aurora, CO USA
[3] Univ Giessen & Marburg, Giessen, Germany
[4] Imperial Coll London, Natl Heart & Lung Inst, London, England
[5] George Washington Univ, Washington, DC USA
[6] Hannover Med Sch, Hannover, Germany
[7] Univ Paris Sud, AP HP, INSERM, U999, Le Kremlin Bicetre, France
[8] Univ Michigan, Ann Arbor, MI 48109 USA
[9] Brigham & Womens Hosp, 75 Francis St, Boston, MA 02115 USA
[10] Merck & Co Inc, Rahway, NJ 07065 USA
[11] MSD UK Ltd, London, England
[12] Univ Sao Paulo, Sao Paulo, Brazil