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Kyu Yong Cho
Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
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Hideaki Miyoshi
Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
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Akinobu Nakamura
Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan
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Takashi Kurita
Department of Internal Medicine, Japanese Red Cross Kitami Hospital, Kitami 090-8666, Japan
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Tatsuya Atsumi
Division of Rheumatology, Endocrinology and Nephrology, Hokkaido University Graduate School of Medicine, Sapporo 060-8638, Japan