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Berger, Thomas; Caspar, Franz; Richardson, Robert; Kneubühler, Bernhard; Sutter, Daniel; Andersson, Gerhard (2011). Internet-based treatment of social phobia: A randomized controlled trial comparing unguided with two types of guided self-help. Behaviour research and therapy, 49(3), pp. 158-169. Amsterdam: Elsevier 10.1016/j.brat.2010.12.007
