Training cognitive flexibility in patients with anorexia nervosa: a pilot randomized controlled trial of cognitive remediation therapy - Brockmeyer, Timo; Ingenerf, Katrin; Walther, Stephan; Wild, Beate; Hartmann, Mechthild; Herzog, Wolfgang; Bents, Hinrich; Friederich, Hans-Christoph (The international journal of eating disorders, 2014)