TY - JOUR AU - Afshar, H; Roohafza, H; Mohammad-Beigi, H TI - N-acetylcysteine add-on treatment in refractory obsessive-compulsive disorder: A randomized, double-blind, placebo-controlled trial JO - J Clin Psychopharmacol VL - 32 PY - 2012 DO - 10.1097/JCP.0b013e318272677d SP - 797 EP - 803 N1 - et al. ER -