Introduction of the participant (Profession, family, home, …)

Cannabis use: - Since when? - What form? - Other substances used? - How often do you use it? - Alone or with others?

Reasons for cannabis use

What health problems do you have? What treatment do you have or have you had for these health problems (medical or management or lifestyle modification)?

How do you think cannabis improves your health? What disadvantages do you see in it?

How do you get the cannabis you need? What difficulties, if any, do you have in obtaining it?

How do you feel about your cannabis use? Do you have any inner conflict about your use? Can you elaborate?

What are the opinions of people around you or people who know about your use? Does this have an impact on your inner conflict?

Perception of social risks/perception of public health policies?

Initiation? Learning effects, technique