1. FAQs. https://www.mturk.com/worker/help Amazon Web Services (2021, February 8);What is Amazon Mechanical Turk?,2021
2. Negative consequences of the widespread and inappropriate easy access to purchasing prescription medications on the internet;Fincham;Am Health Drug Benefits,2021
3. A challenge for healthcare but just another opportunity for illegitimate online sellers: dubious market of shortage oncology drugs;Fittler;PLoS One,2018
4. Research in the crowdsourcing age, a case study;Hitlin;Pew Research Center,2016
5. COVID-19 is driving consumers online and illicit pharmacies are waiting for them;Kennedy;Forbes,2020