It is the most common type of heart diseases and the main cause of heart attack. If Smooth and elastic lining inside a coronary artery develops atheroscelrosis then coronary artery diseases may occur. Common sign and symptom are angina that occurs regularly with activity. Risk factors of coronary artery diseases are smoking, hypertension, obesity, diabetes, stress and hyperlipidemia etc. Scholarly peer review is the process of subjecting an author'sscholarlywork, research, or ideas to the scrutiny of others who are experts in the same field, before a paper describing this work is published in a journal.