This comment is the same as i wrote in the main cannabis drug aritcle there is mention of a swedish study Cannabis and Schizophrenia A Longitudinal Study of Swedish Conscripts by S Andreasson et al The Lancet 1987 Vol 2 1483 1486 now allthough it has been published in the lancet i think the info needs to be removed for some time while for the article to be reviewed again sweden is highly anti cannabis and several negative studies have been motivated by political aims it needs to be checked for quality of its method and validity