SchmidtAJBourneAWeatherburnPet al.Illicit drug use among gay and bisexual men in 44 cities: findings from the European MSM Internet Survey (EMIS). Int J Drug Policy2016;
38: 4–12.
2.
HegaziALeeMWhittakerWet al.Chemsex and the city: sexualised substance use in gay bisexual and other men who have sex with men attending sexual health clinics. Int J STD AIDS2017;
28: 362–366.
3.
LiakoniEWaltherFNickelCHet al.Presentations to an urban emergency department in Switzerland due to acute γ-hydroxybutyrate toxicity. Scand J Trauma Resusc Emerg Med2016;
24: 107.
4.
WoodDWarren-GashCAshrafTet al.Medical and legal confusion surrounding gamma-hydroxybutyrate (GHB) and its precursors gamma-butyrolactone (GBL) and 1, 4-butanediol (1, 4BD). QJM2008;
101: 23–29.
5.
Hillebrand J, OlszewskiD andSedefovR. GHB and its precursor GBL: an emerging trend case study. EMCDDA Thematic Papers, European Monitoring Centre for Drugs and Drug Addiction, Lisbon, Portugal, March 2008.