The international GDS team aims to make the use of psychoactive substances safer, regardless of their legal status, and aims to promote the objective exchange of information worldwide.

GDS2021 is conducted on an encrypted survey platform. Participation is anonymous and your information will be treated confidentially. You do not have to provide any personal data and your IP address will not be stored.

This year's survey will take approximately 20-30 minutes to complete. You will be invited to select individual additional modules based on your answers.

You can save your information at any time and continue with the survey at a later date.

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