S. Lupien et al., “Effects of Stress Throughout the Lifespan on the Brain, Behaviour and Cognition,” Nat Rev Nsci 10 (2009): 434; V. Carrion et al., “Stress Predicts Brain Changes in Children: A Pilot Longitudinal Study on Youth Stress, Posttraumatic Stress Disorder, and the Hippocampus,” Pediatrics 119 (2007): 509; F. L. Woon and D. W. Hedges, “Hippocampal and Amygdala Volumes in Children and Adults with Childhood Maltreatment – Related Posttraumatic Stress Disorder: A Meta-analysis,” Hippocampus 18 (2008): 729.