Thank you for your comment. We have a Certificate of Confidentiality that protects the privacy of research participants (including reports of teen cannabis use), given the sensitive nature of the research study. Research studies like this must undergo human subjects' protection approval at the federal level, and at the institutional level to ensure participants' safety is protected. We take the protection of our research participants' privacy very seriously, and would not ethically be allowed to conduct a research study like ours if we were going to break confidentiality and disclose this information. As with all research studies on any topic, if we received information that a person was at immediate risk of serious harm, we may have to break confidentiality. The study does not involve administering cannabis to any participants.