<style face="normal" font="default" size="100%">What is the role of invasive versus non-invasive coronary angiography in the investigation of patients suspected to have coronary heart disease?</style>

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0<style face="normal" font="default" size="100%">What is the role of invasive versus non-invasive coronary angiography in the investigation of patients suspected to have coronary heart disease?</style><style face="normal" font="default" size="100%">What is the role of invasive versus non-invasive coronary angiography in the investigation of patients suspected to have coronary heart disease?</style>