1. Department of Internal Medicine, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania
2. Department of Rehabilitation Medicine, Sidney Kimmel Medical College of Thomas Jefferson University, Philadelphia, Pennsylvania
3. Department of Medicine, Einstein Medical Center, Philadelphia, Pennsylvania
4. Department of Medicine, Biochemistry, and Molecular Biology, Leonard M. Miller School of Medicine of University of Miami, Miami, Florida
5. Department of Physical Medicine & Rehabilitation, Leonard M. Miller School of Medicine of University of Miami, Miami, Florida