. 2021 Feb 22;143(16):1584–1596. doi: 10.1161/CIRCULATIONAHA.120.050252
© 2021 The Authors.
Circulation is published on behalf of the American Heart Association, Inc., by Wolters Kluwer Health, Inc. This is an open access article under the terms of the Creative Commons Attribution Non-Commercial-NoDerivs License, which permits use, distribution, and reproduction in any medium, provided that the original work is properly cited, the use is noncommercial, and no modifications or adaptations are made.
Figure 1.
Study design schematic. Flow chart of how study was conducted step-by-step.