1. Liber JM, McLeod BD, Van Widenfelt BM, Goedhart AW, et al. (2010). Examining the relation between the therapeutic alliance, treatment adherence, and outcome of cognitive behavioral therapy for children with anxiety disorders. Behavior Therapy 41(2):172-86.
2. Liber JM, van Widenfelt BM, van der Leeden AJ, Goedhart AW, et al. (2010). The relation of severity and comorbidity to treatment outcome with Cognitive Behavioral Therapy for childhood anxiety disorders. Journal of Abnormal Child Psychology 38(5):683-94.
3. de Jonghe JF, Goedhart AW, Ooms ME, Kat MG, et al. (2003). Negative symptoms in Alzheimer's disease: a confirmatory factor analysis. International Journal of Geriatric Psychiatry 18(8):748-53.
