[1] Univ Edinburgh, Ctr Cardiovasc Sci, Edinburgh, Midlothian, Scotland
[2] Inst Cardiol, Dept Intervent Cardiol & Angiol, Warsaw, Poland
[3] Univ Edinburgh, BHF Dept Cardiovasc Sci, Edinburgh, Midlothian, Scotland
[4] Golden Jubilee Natl Hosp, Golden, CO USA
[5] Univ Bristol, Bristol Heart Inst, Bristol Royal Infirm, Bristol, Avon, England
[6] Univ Otago, Christchurch Heart Inst, Christchurch, New Zealand
[7] Univ Edinburgh, Ctr Clin Brain Sci, Edinburgh, Midlothian, Scotland
[8] Cedars Sinai Med Ctr, Dept Imaging, Div Nucl Cardiol, Los Angeles, CA 90048 USA