High- and low-dose cyclophosphamide in Egyptian lupus nephritis patients: a multicenter retrospective analysis.

"Declarations Conflict of interestM.M.A. Elaziz, S.M. Gamal, A. Fayed, M.H. Abu-Zaid, S.A. Ghoniem, and D.A. Teleb declare that they have no competing interests. Compliance with ethical standards: All steps were performed according to the revised ethical principles of the Declaration of Helsinki in 2000, and local ethical and methodological protocols for approval of the study were followed. Ethics approval and consent to participate: This study is in agreement with the ethical guidelines of the Declaration of Helsinki and it follows the ethical standards of the Tanta Faculty of Medicine, with the institutional ethics board approval number 34997/10/21. Privacy of all patient data was granted, as there was a code number for every patient’s file that included all investigations. Consent for publication: The final manuscript has been read and approved by all authors, they have obtained the required ethical approvals, they have given the necessary attention to ensure the integrity of the work, and agreed to publish this work. Conflict of interest M.M.A. Elaziz, S.M. Gamal, A. Fayed, M.H. Abu-Zaid, S.A. Ghoniem, and D.A. Teleb declare that they have no competing interests."

"Funding This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Funding Open access funding provided by The Science, Technology & Innovation Funding Authority (STDF) in cooperation with The Egyptian Knowledge Bank (EKB)."