Funding for this research was provided by:
Tehran University of Medical Sciences and Health Services (43157)
Received: 20 September 2020
Accepted: 12 February 2021
First Online: 19 February 2021
Ethics approval and consent to participate
: The Ethics Committee of Tehran University of Medical Sciences approved the study protocol. Ethical considerations in this study included explaining the importance, objectives and methods, optional participation in the study, recording the interviews, maintaining data confidentiality at all stages and mutual decision about the time and place of the interview. Informed written consent was obtained from all participants.
: Not applicable.
: The authors declare that they have no competing interests.