Evaluating the Effect of Melatonin on Positive and Negative Symptoms of Schizophrenic Patients: A Randomized Placebo-Controlled Study - Behrouzian, Forouzan; Abdi, Leila; Nazarinasab, Masoumeh; Moghaddam Sadegh, Amirali; Anoosheh, Sanam; Moradi, Maryam (Iranian Journal of Psychiatry, 2023)