article 18 consumer human 18 adult 9 female 7 human experiment 7 male 7 certification 4 clinical article 4 demography 4 food safety 4 marketing 4 Food safety 3 attitude 3 case report 3 controlled study 3 drug safety 3 interview 3 major clinical study 3 perception 3 purchasing 3 China 2 European Union 2 Netnography 2 attention 2 awareness 2 convenience food 2 habit 2 physician 2 qualitative research 2