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. 2018 Oct 24;8(10):e023133. doi: 10.1136/bmjopen-2018-023133

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© Author(s) (or their employer(s)) 2018. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Overall and regional distributions of percutaneous coronary intervention (PCI)-capable military hospitals and PCI procedures performed. Military hospitals were divided by their annual PCI volume with a threshold of 400 cases per year (A), as well as further by geographical regions (C); the overall PCI procedures performed during 2011–2014 were also grouped by annual PCI volumes of hospitals (B) and by regions (D). Northern China include North China, Northwest China and Northeast China, Southern China include South China, East China, Central China and Southwest China.