aAdvocate Heart Institute, Advocate Christ Medical Center, Oak Lawn, Illinois

bSecond Department of Internal Medicine, University of Toyama, Toyama, Japan

cDivision of Cardiology, Department of Medicine, University of Illinois-Chicago, Chicago, Illinois, USA

Correspondence to Nikhil Narang, MD, Advocate Christ Medical Center, 4440 W. 95th St OPP Suite 6411, Oak Lawn, IL 60453, USA. Tel: +1 708 684 1414; fax: +1 708 520 1875; e-mail: [email protected], [email protected]

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