Funding for this research was provided by:
Mashhad University of Medical Sciences (990046)
Received: 30 May 2020
Accepted: 6 June 2020
First Online: 26 June 2020
Ethics approval and consent to participate
: The trial has been approved by the Ethical Committee of Mashhad University of Medical Sciences, Iran. Ethics committee reference number is IR.MUMS.REC.1399.078 which was registered on April 12, 2020. (Publicly available at this link)Hereby we certify that this trial has received ethical approval from the aforementioned ethical committee as described above.An informed consent is obtained from all participants or their legal guardians prior to recruitment.
: Not applicable.
: The authors declare that they have no competing interests.