[1] Emergency Cardiol Ctr, GE-0159 Tbilisi, Georgia
[2] Univ Washington, Sch Publ Hlth & Community Med, Multidisciplinary Int Res Training Program, Seattle, WA USA
[3] Univ Washington, Sch Publ Hlth & Community Med, Cardiovasc Hlth Res Unit, Seattle, WA USA
[4] Univ Washington, Sch Publ Hlth & Community Med, Dept Epidemiol, Seattle, WA USA