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Tondorf, Theresa; Kaufmann, Lisa-Katrin; Degel, Alexander; Locher, Cosima; Birkhäuer, Johanna; Gerger, Heike; Ehlert, Ulrike; Gaab, Jens (2017). Employing open/hidden administration in psychotherapy research: A randomized-controlled trial of expressive writing. PLoS ONE, 12(11):e0187400.
Kossowsky, Joe; Pfaltz, Monique C; Schneider, Silvia; Taeymans, Jan; Locher, Cosima; Gaab, Jens (2013). The separation anxiety hypothesis of panic disorder revisited: a meta-analysis. American Journal of Psychiatry, 170(7):768-781.