[1
]
University of Pennsylvania School of Medicine, Philadelphia.
[2
]
Boston University School of Medicine, Boston, Massachusetts.
[3
]
University of Maryland School of Medicine and Veterans Affairs Maryland Health Care
System, Baltimore.
[4
]
Arcadia University, Glenside, Pennsylvania.
[5
]
McMaster University, Hamilton, Ontario, Canada.
[6
]
Rush University Medical Center, Chicago, Illinois.
[7
]
University of North Carolina School of Medicine, Chapel Hill.
[8
]
South Holland Recreational Services, University of Chicago, and Ingalls Memorial Hospital,
Thornton, Illinois.
[9
]
University of Michigan Medical Center, Ann Arbor.
[10
]
Watchung, New Jersey.
[11
]
Tufts Medical Center, Boston, Massachusetts.
[12
]
University of Toronto, Toronto, Ontario, Canada.
[14
]
University of Arizona College of Medicine, Tucson.
[15
]
New York University Langone Medical Center, New York, New York.
[16
]
University of Delaware, Newark.
[17
]
University of California, Davis.
[18
]
Ronald Reagan UCLA Medical Center, Los Angeles, California.
[19
]
Johns Hopkins University School of Medicine, Baltimore, Maryland.
[20
]
ECRI Institute, Plymouth Meeting, Pennsylvania.
[21
]
Cedars Sinai Medical Center, Los Angeles, California.
[22
]
American College of Rheumatology, Atlanta, Georgia.
[23
]
University of Minnesota, Minneapolis.