Data collection and management
The data collection team involved three laboratory technicians, two nurses, two sociologists, one demographer, three medical doctors and a statistician. They had similar levels of experience on the studied topic. However, they participated in a three-day training conducted by principal investigator before the baseline and evaluation phase, which involved briefing them on the study protocol, data collection tools and ethical considerations. In the evaluation phase, the same procedures as for the baseline data collection were adhered to [Twenty-four (24) items were adopted from different grey literature and used to assess the knowledge level of each regular street food consumer [