. The initial systematic search was performed between January and June 2021, and a subsequent update was performed in August 2021. Results were limited to full articles written in English and/or Italian, without any date limitation and with no additional inclusion or exclusion criteria. The search string was purposely vague in order to adequately p

Though DuckDuckGo does make money from its search engine, it does not collect or use the user’s profile to display target ads.However, the widespread knowledge of these drugs in media and social networks2 saf made them widely adopted lifestyle drugs,3 thus drawing the attention of counterfeiters.Distributed Denial of Service (Da??t?k Ihtimam Enge