RT Journal Article SR Electronic T1 Five steps for ruling out coronary artery disease in general practice JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 463 OP 463 DO 10.1503/cmaj.111-2021 VO 183 IS 4 A1 Hudzik, Bartosz A1 Szkodzinski, Janusz A1 Polonski, Lech YR 2011 UL http://www.cmaj.ca/content/183/4/463.2.abstract