%0 Journal Article %B Occupational and Environmental Medicine %D 2012 %G eng %M 22693269 %P 587-91 %T Lack of effect of nitrogen dioxide exposure on heart rate variability in patients with stable coronary heart disease and impaired left ventricular systolic function %V 69 %7 2012/06/14 %@ 1470-7926 (Electronic)1351-0711 (Linking)