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Relationship between power Doppler grade and the pathological blood vessel features in long-standing rheumatoid arthritis

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Correspondence to Tamotsu Kamishima.

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All the authors declare that they have no conflict of interest.

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All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.

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Informed consent was obtained from all individual participants included in the study.

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Katsumi Saito and Asami Abe have contributed equally to this study.

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Saito, K., Abe, A., Kamishima, T. et al. Relationship between power Doppler grade and the pathological blood vessel features in long-standing rheumatoid arthritis. Rheumatol Int 36, 1689–1690 (2016). https://doi.org/10.1007/s00296-016-3576-2

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  • DOI: https://doi.org/10.1007/s00296-016-3576-2

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