[1] Thomas Jefferson Univ, Jefferson Med Coll, Philadelphia, PA 19107 USA
[2] Thomas Jefferson Univ, Jefferson Med Coll, Coll Med, Philadelphia, PA 19107 USA
[3] McMaster Univ, Hamilton, ON, Canada
[4] Boehringer Ingelheim Pharmaceut Inc, Clin Dev & Med Affairs, Ridgefield, CT 06877 USA
[5] Boehringer Ingelheim GmbH & Co KG, Cardiol, D-55218 Ingelheim, Germany
[6] Boehringer Ingelheim Pharma GmbH & Co KG, Cardiol, D-55218 Ingelheim, Germany
[7] Univ Uppsala Hosp, Uppsala, Sweden