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Participants underwent assessment at baseline and every six months for two years and upon conversion to psychosis (if applicable) from January 2009 to April 2013

Materials and methods Participants NAPLS2 is a longitudinal casecontrol study of individuals at CHR for psychosis across eight sites in North America

The explanation that is usually offered is the so-called self-medication hypothesis

Effects of short-term, high-frequency repetitive transcranial magnetic stimulation to bilateral dorsolateral prefrontal cortex on smoking behavior and cognition in patients with schizophrenia and non-psychiatric controls