[Chemsex: health risks and the gap between healthcare needs and services among MSM].

Chemsex refers to the use of drugs, including ecstasy, GHB, cocaine and methamphetamine, by Males who have Sex with Males (MSM) and transgenders with the specific intention to perform sexual activities due to the drugs' facilitating influence on sexual performance and experience. Chemsex is predominantly situated in a private setting. Multiple routes of drug administration are applied, including 'slamming' and 'bootybumping'.