Received: 22 June 2019
Accepted: 2 April 2020
First Online: 24 April 2020
Ethics approval and consent to participate
: The study protocol was approved by the Ethics Committee of Shahid Beheshti University of Medical Sciences (IR.SBMU.MSP.REC.1397.2.7). The protocol was initially explained to all patients visiting the Rheumatology Clinic of Mofid Children’s Hospital and after obtaining a written informed consent from the parents/guardians, they were enrolled in the study. No extra costs were imposed on the parents. All patients’ data were regarded as confidential.
: We confirm that the written informed consent form has been provided by the parents to have the case details published.