RT Journal Article SR Electronic T1 Cold feet, warm heart JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 959 OP 1032 DO 10.1136/heartjnl-2020-316815 VO 106 IS 13 A1 Bing, Rong A1 Hamra, Mardi A1 Newby, David E YR 2020 UL http://heart.bmj.com/content/106/13/959.abstract AB