Mark D Huffman1,2, Dike Ojji3,4, Donald M Lloyd-Jones1,2. 1. Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois. 2. Division of Cardiology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois. 3. Department of Medicine, Faculty of Clinical Sciences, College of Health Sciences, University of Abuja, Gwagwalada, Abuja, Nigeria. 4. University of Abuja Teaching Hospital, Gwagwalada, Abuja, Nigeria.