[1] Univ Oxford, Oxford, England
[2] Durham VAMC, Durham, NC USA
[3] Temple Univ, Philadelphia, PA 19122 USA
[4] Univ Cent Lancashire, Preston, Lancs, England
[5] Mem Univ Newfoundland, St John, NF, Canada
[6] Grp Hlth Res Inst, Seattle, WA USA
[7] Univ Washington, Washington, DC USA
[8] Turku Univ Hosp, Turku, Finland
[9] Univ Turku, Turku, Finland
[10] Queen Mary Univ London, London, England
[11] Univ Colorado, Denver, CO 80202 USA
[12] Univ Cambridge, Cambridge, England
[13] HealthPartners Inst Educ & Res, Minneapolis, MN USA
[14] Univ Edinburgh, Edinburgh, Midlothian, Scotland
[15] Icahn Sch Med Mt Sinai, New York, NY 10029 USA
[16] Italian Inst Telemed, Varese, Italy
[17] NYU, New York, NY USA
[18] Univ Milano Bicocca, Milan, Italy
[19] Univ Birmingham, Birmingham, W Midlands, England
[20] Cardiovasc Res Inst Maastricht, Maastricht, Netherlands
[21] Iowa City VA Med Ctr, Iowa City, IA USA
[22] Univ Iowa, Iowa City, IA 52242 USA