1. Department of Public Health Sciences, Penn State College of Medicine , Hershey, Pennsylvania , USA
2. Department of Medicine, Penn State Milton S. Hershey Medical Center , Hershey, Pennsylvania , USA
3. Department of Medicine, Vanderbilt University , Nashville, Tennessee , USA
4. Preventive Medicine Department, Northwestern University , Chicago, Illinois , USA
5. Department of Nutrition, Harvard T. H. Chan School of Public Health , Boston, Massachusetts , USA
6. Department of Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts , USA
7. Faculty of Medicine and Odontostomatology, University of Sciences, Techniques, and Technologies of Bamako , Bamako, Mali