RT Journal Article SR Electronic T1 Safety of cardiovascular magnetic resonance in patients with cardiovascular implants and devices JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 1241 OP 1244 DO 10.1136/hrt.2003.021154 VO 90 IS 11 A1 Prasad, S K A1 Pennell, D J YR 2004 UL http://heart.bmj.com/content/90/11/1241.abstract AB