Funding for this research was provided by:
United Arab Emirates University, Zayed bin Sultan Center for Health Sciences (Grant G00002674, Fund # 31R139)
Received: 13 May 2020
Accepted: 7 September 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: This research was approved by the Social Sciences Ethics Committee of UAE University (ERS_2017_5631). Informed consent was obtained from the shop managers and individual workers who participated in the study.
: Figure InternalRef removed. The worker gave his written consent to use his picture for publication.
: Authors have no conflicts of interest to declare.