[1] Harvard Med Sch, Brigham & Womens Hosp, Boston, MA USA
[2] Kaiser Permanente Los Angeles Med Ctr, Cardiol, Los Angeles, CA USA
[3] Univ Utah, Cardiol, Salt Lake City, UT USA
[4] Univ Glasgow, Glasgow, Lanark, Scotland
[5] Univ Nacl Cordoba, Cardiol, Cordoba, Argentina
[6] Univ Med Ctr Groningen, Groningen, Netherlands
[7] St Lukes Hosp, Kansas City, MO USA
[8] Duke NUS Grad Med Sch Singapore, Singapore, Singapore
[9] Minneapolis VA Hlth Care Syst, Minneapolis, MN USA