1 Department of Medicine, John H. Stroger Jr Hospital of Cook County, Chicago, IL, USA.
2 Division of Cardiology, Cook County Health, Chicago, IL, USA.
3 Section of Cardiovascular Medicine, Yale School of Medicine, New Haven, CT, USA.
4 Division of Cardiology, Cook County Health, Chicago, IL, USA; Division of Cardiology, Rush University Medical Center, Chicago, IL, USA. Electronic address: [email protected].