RT Journal Article SR Electronic T1 Ultrasound cardiac calcium assessment JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 988 OP 988 DO 10.1136/heartjnl-2014-305855 VO 100 IS 12 A1 Gaibazzi, Nicola A1 Rossi, Andrea A1 Faggiano, Pompilio YR 2014 UL http://heart.bmj.com/content/100/12/988.abstract AB