Proportion of patients in south London with first-episode psychosis attributable to use of high potency cannabis: a case-control study.
The Lancet Psychiatry, March 2015
—
BACKGROUND: The risk of individuals having adverse effects from drug use (eg, alcohol) generally depends on the frequency of use and potency of the drug used. We aimed to investigate how frequent use of skunk-like (high-potency) cannabis in south London affected the associatio…