[1] NHLBI, Framingham Heart Study, Framingham, MA 01702 USA
[2] Boston Univ, Sch Med, Boston, MA 02118 USA
[3] Boston Univ, Sch Publ Hlth, Boston, MA 02118 USA
[4] Indiana Univ, Krannert Inst Cardiol, Indianapolis, IN 46204 USA
[5] NHLBI, NIH, Bethesda, MD 20892 USA
[6] Brigham & Womens Hosp, Boston, MA 02115 USA
[7] Univ Minnesota, Minneapolis, MN USA
[8] Johns Hopkins Univ Hosp, Baltimore, MD 21287 USA
[9] McMaster Univ, Hamilton, ON, Canada
[10] Univ S Florida, Tampa, FL USA
[11] Vanderbilt Univ, Sch Med, Nashville, TN 37212 USA
[12] Harvard Univ, Massachusetts Gen Hosp, Sch Med, Boston, MA USA
[13] Kaiser Permanente No Calif, Oakland, CA USA
[14] Univ Calif San Francisco, San Francisco, CA 94143 USA
[15] Univ Washington, Seattle, WA 98195 USA
[16] Univ Michigan, Ann Arbor, MI 48109 USA
[17] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada
[18] St Pauls Hosp, Vancouver, BC V6Z 1Y6, Canada
[19] Northwestern Univ, Feinberg Sch Med, Chicago, IL 60611 USA
[20] San Francisco VA Med Ctr, San Francisco, CA USA
[21] Mayo Clin Rochester, Rochester, MN USA
[22] Univ Montreal, Montreal, PQ, Canada
[23] Montreal Heart Inst, Montreal, PQ H1T 1C8, Canada
[24] Univ Oklahoma, Hlth Sci Ctr, Oklahoma City, OK USA
[25] Cleveland Clin, Cleveland, OH 44106 USA
[26] Case Western Reserve Univ, Univ Hosp Case Med Ctr, Cleveland, OH 44106 USA
[27] Univ Calgary, Libin Cardiovasc Inst Alberta, Calgary, AB, Canada