Cognitive behavioral based group psychotherapy focusing on repetitive negative thinking: Decreased uncontrollability of rumination is related to brain perfusion increases in the left dorsolateral prefrontal cortex. - Baeken, Chris; Wu, Guo-Rong; Rogiers, Roland; Remue, Jonathan; Lemmens, Gilbert Md; Raedt, Rudi De (Journal of Psychiatric Research, 2021)