That article is 50 years old. Perhaps this one from 2013: http://journals.plos.org/plosone/article?id=10.1371/journal.... "21,967 respondents (13.4% weighted) reported lifetime psychedelic use. There were no significant…
That article is 50 years old. Perhaps this one from 2013: http://journals.plos.org/plosone/article?id=10.1371/journal.... "21,967 respondents (13.4% weighted) reported lifetime psychedelic use. There were no significant…