Study characteristics
Sixteen studies were included in the analysis [46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61]. Most were quantitative (n = 12), using questionnaires to assess public perceptions [46,47,48,49,50,51,52, 54, 56, 57, 59, 61]. Three studies conducted focus groups [53, 55, 60] while one study used both focus groups and a survey [58]. The US has contributed the most to this field thus far, undertaking six of the 16 studies…