I had the pleasure of touring Dr. Celi's lab a couple of years ago, and remained intrigued with this project. Sana is, aside from an open-source system that uses cellphones to collect data, it is also a collection of technical, medical, and community experts. They organize sessions with universities and health organizations in rural and underserved areas. A couple of questions that I think about: what successes or roadblocks have they experienced in this training? And, in the case of sexual health, how can we leverage mobile data collection to prevent, and treat issues in remote regions (or maybe not even remote)?