Received: 9 June 2019
Accepted: 29 November 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: All participants were informed about the purpose of the study, and a written informed consent was obtained before it commenced. This study and the consent procedure were approved by the Ministry of Health of the Kingdom of Bahrain who is a member of the Research Ethics Committee Bahrain and the involved clinics.
: Not applicable
: The authors declare that they have no competing interests.