Avraham Y, Amer J, Doron S, Abu-Tair L, Mahamid M, Khatib A, Berry EM, Safadi R. The direct profibrotic and indirect immune antifibrotic balance of blocking the cannabinoid 2 receptor. American Journal of Physiology-Gastrointestinal and Liver Physiology. 2012 Jun 15;302(12):G1364–72. doi: 10.1152/ajpgi.00191.2011.