Timing matters: change depends on the stage of treatment in cognitive behavioral therapy for panic disorder with agoraphobia
Journal of Consulting and Clinical Psychology (2014) - Comment
pubmed: 24188509  doi: 10.1037/a0034555  issn: 1939-2117  issn: 0022-006x 

Andrew T. Gloster, Jens Klotsche, Alexander L. Gerlach, Alfons Hamm, Andreas Ströhle, Siegfried Gauggel, Tilo Kircher, Georg W. Alpers, Jürgen Deckert, Hans-Ulrich Wittchen