title: Cannabis and psychosis - Authors' reply.
authors.affiliation: Department of Social Genetic and Developmental Psychiatry, Institute of Psychiatry, Kings College London. Electronic address: marta.diforti@kcl.ac.uk.
authors.forename: Marta
authors.initials: M
authors.lastname: Di Forti
authors.affiliation: Department of Social Genetic and Developmental Psychiatry, Institute of Psychiatry, Kings College London.
authors.forename: Evangelos
authors.initials: E
authors.lastname: Vassos
authors.affiliation: Department of Addiction, Institute of Psychiatry, Kings College London.
authors.forename: Michael
authors.initials: M
authors.lastname: Lynskey
authors.affiliation: Department of Health Services and Public Health, Institute of Psychiatry, Kings College London.
authors.forename: Morgan
authors.initials: M
authors.lastname: Craig
authors.affiliation: Department of Psychosis Studies, Institute of Psychiatry, Kings College London.
authors.forename: Robin MacGregor
authors.initials: RM
authors.lastname: Murray