1 Division of Rheumatology, Cedars-Sinai Medical Center, University of California at Los Angeles, Los Angeles, CA 90048, USA. Electronic address: danielwallac@gmail.com.
2 Division of Rheumatology, Zucker School of Medicine at Hofstra, Northwell, New York, NY, USA.
3 The First Department of Internal Medicine, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.