From the, Baylor College of Medicine, Ben Taub General Hospital, Houston, TX. the, First Pavlov State, Medical University of St. Petersburg, St. Petersburg, Russia. the, Department of Emergency Medicine, Texas Tech University Health Sciences Center, El Paso, TX. the, Scientific Centre of Children's Health, Russian Academy of Medical Science, Moscow, Russia. the, Scientific Research Institution for Complex Issues of Cardiovascular Disease, Kemerovo Medical University, Kemerovo, Russia. AstraZeneca, Gaithersburg, MD. AstraZeneca, Gothenburg, Sweden. and the, Department of Emergency Medicine, Henry Ford Hospital, Detroit, MI.