Article History
Received: 16 April 2019
Accepted: 1 October 2019
First Online: 15 October 2019
Ethics approval and consent to participate
: The Ethics Committee of Capital Medical University confirmed that no formal Ethics vote or consent is needed for this project. Participants were informed that participation was on a voluntary basis and that their anonymity was guaranteed. A questionnaire was provided to each participant, within which they were informed that submission of their responses would be considered as proof of consent to participate.
: Not applicable.
: The authors declare that they have no competing interests.