עישון

Kiiskinen, Vartiainen, Puska & Pekurinen (2002). "Smoking-related costs among 25 to 59 year-old males in a 19-year individual follow-up", National Library of Medicine.

Campbell et al. (2008). "An informal school-based peer-led intervention for smoking prevention in adolescence (ASSIST): a cluster randomized trial", National Library of Medicine.

Thomas, McLellan & Perera (2013). "School-based programs for preventing smoking", National Library of Medicine.