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CHATOOR, IRENE; HERMAN, BARBARA H.; HARTZLER, JENNIFER . (1994). Effects of the Opiate Antagonist, Naltrexone, on Binging Antecedents and Plasma β-Endorphin Concentrations. Journal of the American Academy of Child & Adolescent Psychiatry, 33(5), 748–752. doi:10.1097/00004583-199406000-00016 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research