- Correspondence to Dr Randal J Thomas, Cardiovascular Health and Rehabilitation Program, Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic and Foundation, 200 First Street, SW, Rochester, MN 55905, USA;
- Received April 7, 2016
- Revised May 11, 2016
- Accepted May 12, 2016
- First published June 7, 2016.
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