How long and how often does ECT for schizophrenia relapse? A systematic review & meta-analysis - Nobuatsu Aoki; Aran Tajika; Taro Suwa; Hirotsugu Kawashima; Kazuyuki Yasuda; Toshiyuki Shimizu; Nina Uchinuma; Hirotaka Tominaga; Xiao-Wei Tan; Azriel-HK. Koh; Phern-Chern Tor; Stevan Nicolin; et al. (Brain Stimulation)