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Methotrexate plus prednisone in patients with relapsing idiopathic retroperitoneal fibrosis

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  • Contributors AV, FA and CB designed the work, followed the patients, analysed the data and wrote the manuscript. AP, MLU, LM, EO and LM followed the patients, collected the data and contributed to generating the figures. SF was in charge of the urological follow-up of the patients. RC analysed imaging studies.

  • Funding This work was supported by the University Hospital of Parma (non-monetary support). The supporter did not have any role in study design.

  • Competing interests None.

  • Patient consent Obtained.

  • Ethics approval Ethical Committee of Parma.

  • Provenance and peer review Not commissioned; externally peer reviewed.

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