Thus, all reported means and medians are trimmed. In addition, we excluded ‘Protest votes’ and ‘Don't know’ responses. For the UK, we converted the values of the national currency into Euros. WTP values are presented in € per person per year (€ pp/y). To analyses the determinants of the WTP estimates, we constructed two multivariate linear regression (basic and extended) models for the three WTP estimate levels: generic, specific risk, and combined risk scenarios. The basic model consisted of variables that have been frequently identified as significant in the literature (i.e., age, gender, years of education, country, income and health score). To the basic model, we added perception-related variables to construct the extended model.