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Kasukawa, R., Shio, K. Color flow signals of six-joint Doppler sonography correlate with disease activity in patients with rheumatoid arthritis. Mod Rheumatol 23, 203–204 (2013). https://doi.org/10.1007/s10165-012-0617-x
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DOI: https://doi.org/10.1007/s10165-012-0617-x