Canna~Fangled Abstracts The role of endogenous opioids in non-suicidal self-injurious behavior: Methodological challenges. 2014 Nov 18. pii: S0149-7634(14)00292-9. doi: 10.1016/j.neubiorev.2014.11.007. The role of endogenous opioids in non-suicidal self-injurious…Freedom WaresNovember 18, 2014