. Author manuscript; available in PMC: 2018 Jun 15.
Published in final edited form as: JACC Heart Fail. 2018 Jun;6(6):465–473. doi: 10.1016/j.jchf.2018.02.002
This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).