. Author manuscript; available in PMC: 2015 Dec 11.
Published in final edited form as: Circulation. 2014 Mar 28;130(23):e199–e267. doi: 10.1161/CIR.0000000000000041
Permissions: Multiple copies, modification, alteration, enhancement, and/or distribution of this document are not permitted without the express permission of the American Heart Association. Instructions for obtaining permission are located at http://www.heart.org/HEARTORG/General/Copyright-Permission-Guidelines_UCM_300404_Article.jsp. A link to the “Copyright Permissions Request Form” appears on the right side of the page.