N-Acetylcysteine as an Adjunct to Risperidone for Treatment of Negative Symptoms in Patients With Chronic Schizophrenia: A Randomized, Double-Blind, Placebo-Controlled Study

Farokhnia, M; Azarkolah, A; Adinehfar, F; Khodaie-Ardakani, MR; Hosseini, SMR; Yekehtaz, H; Tabrizi, M; Rezaei, F; Salehi, B; Sadeghi, SMH; Moghadam, M; Gharibi, F; Mirshafiee, O; Akhondzadeh, S