1. Department of Pharmaceutical Sciences, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
2. Hospital for Special Surgery, 535 East 70th Street, New York, New York 10021, United States
3. Department of Orthopedic Surgery and Rehabilitation, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
4. Department of Internal Medicine, Division of Rheumatology, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
5. Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska 68198, United States
6. Omaha VA Medical Center, 4101 Woolworth Avenue, Omaha, Nebraska 68105, United States