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.