1. Department of Neurology, Johns Hopkins University, Baltimore, Stroke Unit, 14110 Rover Mill Road, West Friendship, Maryland, 21794 USA
2. Department of Cardiology, Dong-A University, 26 Daesingongwon-Ro Seo-Gu, Busan 602-812, South Korea
3. Central Clinical Hospital of the Administrative Affairs of the President of the Russian Federation, Intensive Cardiology Department, Marshala Timoshenko Ulitsa, 15, Moscow, 121359, Russia