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. 2016 May 31;5(6):e003333. doi: 10.1161/JAHA.116.003333

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© 2016 The Authors. Published on behalf of the American Heart Association, Inc., by Wiley Blackwell.

This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made.

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Radiation exposure across all centers. Ratios of dose‐area products (DAPs) in the transradial (TR) vs transfemoral (TF) cases are expressed for each center (center numbers 1–10, circles) for both coronary angiography (CA; 8 centers) (A) and percutaneous coronary intervention (PCI; 10 centers) (B) cohorts across all centers. The overall weighted average TR:TF DAP ratio (WA‐DAP; dashed lines) for all centers was generated and depicted as 1.15 for all CA procedures and 1.05 for all PCI procedures. Unity depicted as solid vertical lines.