Electroconvulsive Therapy Added to Non-Clozapine Antipsychotic Medication for Treatment Resistant Schizophrenia: Meta-Analysis of Randomized Controlled Trials. oleh Wei Zheng, Xiao-Lan Cao, Gabor S Ungvari, Ying-Qiang Xiang, Tong Guo, Zheng-Rong Liu, Yuan-Yuan Wang, Brent P Forester, Stephen J Seiner, Yu-Tao Xiang