Text and Data Mining valid from 2020-03-06
Received: 10 July 2019
Accepted: 26 February 2020
First Online: 6 March 2020
Ethics approval and consent to participate
: The research approved by the research ethics Committee of Islamic Azad University- Sari branch. Before beginning the interviews, each participant provided with necessary information by principal investigator about the study and interview began after obtaining written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.