[1
]
a Center for Rheumatic disease, Yokohama City University Medical Center , Yokohama
, Japan.
[2
]
b Department of Internal Medicine and Clinical Immunology , Yokohama City University
Graduate School of Medicine , Yokohama , Japan.
[3
]
c Department of Rheumatology and Infectious disease , Yokohama Minami Kyosai Hospital
, Yokohama , Japan.
[4
]
d Department of Radiology , Yokohama City University Graduate School of Medicine ,
Yokohama , Japan.