1. Department of Cardiology, Institute for Clinical and Experimental Medicine (IKEM), Prague, Vídeňská 1958/9, Prague 4, Czech Republic
2. Department of Cardiology, Military University Hospital Prague, U Vojenské nemocnice 1/1200, Prague 6, Czech Republic
3. Department of Cardiology, Regional Hospital Liberec, Husova 357/10, Liberec, Czech Republic
4. Department of Cardiology, Kawakita General Hospital, 1-7-3, Asagaya-kita, Suginami-ku, Tokyo, Japan
5. Department of Anesthesiology and Pain Relief Center, The University of Tokyo Hospital, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan