Dr. Zhanjun Guan graduated from Second Military Medical University. He has been serving as a cardiologist for more than 20 years, respectively in Shanghai Changhai Hospital, University of Arizona Heart Center, New York Presbyterian Hospital of Cornell University, Lillehei Heart Institute at University of Minnesota and University of Texas Medical Branch. Dr. Guan is a member of American Heart Association (AHA), and an AHA appointed Mentor for International Young Cardiologist. Dr, Guan currently serves as an Editor for “Current Cardiology Reviews”, a consultant for “Catheterization and Cardiovascular Interventions” and a reviewer for “Clinical Cardiology”. Dr. Guan is expert in coronary artery disease, hypertension, hyperlipidemia, cardiomyopathy, myocarditis and arrhythmia etc. He is also good at cardiac stress test, echocardiography and Holter ECG etc.