1. Perelman School of Medicine, University of Pennsylvania , Philadelphia, PA 19104 , USA
2. Division of Rheumatology, Overlook Medical Center, Atlantic Health System , Summit, NJ 07901 , USA
3. Atlantic Medical Group, Atlantic Health System , Morristown, NJ 07960 , USA
4. Division of Endocrinology, Overlook Medical Center, Atlantic Health System , Summit, NJ 07901 , USA