RT Journal Article SR Electronic T1 Interaction between body mass index and physical fitness in primary heart failure prevention JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1749 OP 1749 DO 10.1136/heartjnl-2017-311504 VO 103 IS 22 A1 Morten Schmidt YR 2017 UL http://heart.bmj.com/content/103/22/1749.abstract AB