Internal Medicine, Cleveland Clinic, Main Campus G10, 9500 Euclid Avenue, G10, Cleveland, OH 44107, USA. Electronic address: farhan@ccf.org.Internal Medicine, Cleveland Clinic, Main Campus G10, 9500 Euclid Avenue, G10, Cleveland, OH 44107, USA; Internal Medicine Residency Program, CCLCM of Case Western Reserve University, Cleveland Clinic, 9501 Euclid Avenue, Cleveland, OH 44195, USA.Internal Medicine, Cleveland Clinic, Main Campus G10, 9500 Euclid Avenue, G10, Cleveland, OH 44107, USA; Internal Medicine Residency Program, Department of Internal Medicine, Cleveland Clinic, 9500 Euclid Ave, NA-10, Cleveland, OH 44195, USA.