Cerroni S, Watson V, Macdiarmid JI. Consumers' rationality and home-grown values for healthy and environmentally sustainable food. Bio-Based Appl Econ. 2020 May 20;8(2):101-32. doi: 10.13128/bae-8927
Michels KB, Rothman KJ. Update on unethical use of placebos in randomised trials. Bioethics. 2003 Apr;17(2):188-204.