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The power Doppler twinkling artefact associated with periarticular calcification induced by intra-articular corticosteroid injection in patients with rheumatoid arthritis
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Footnotes
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Contributors YN, SS, YS: manuscript preparation, acquisition and interpretation of data; TK, YI, KM: patients treatment and acquisition of data; TI, HI, KF, KY: supervision of manuscript.
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Competing interests None.
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Patient consent Obtained.
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Provenance and peer review Not commissioned; externally peer reviewed.