PT - JOURNAL ARTICLE AU - David Swain TI - Vigorous intensity exercise is essentially safe for coronary heart disease patients AID - 10.1136/eb-2012-101093 DP - 2013 Aug 01 TA - Evidence Based Medicine PG - 159--160 VI - 18 IP - 4 4099 - http://ebm.bmj.com/content/18/4/159.short 4100 - http://ebm.bmj.com/content/18/4/159.full SO - Evid Based Med2013 Aug 01; 18