Table 2. Showing the search strategy, search engines used, and the number of results displayed.

	Database	Search strategy	Results
(a)	PubMed		12,407,521
		Stable Angina	3,913
		Stable Angina and Non-invasive Imaging	83
(b)	Google Scholar		1,380,000
		Non invasive, Coronary imaging, and Stable angina	52