Seekles, W., van Straten, A., Beekman, A., van Marwijk, H., & Cuijpers, P. (2009). Stepped care for depression and anxiety: From primary care to specialized mental health care: a randomised controlled trial testing the effectiveness of a stepped care program among primary care patients with mood or anxiety disorders. BioMed Central.

Seekles, Wike, Annemieke van Straten, Aartjan Beekman, Harm van Marwijk, and Pim Cuijpers. Stepped Care for Depression and Anxiety: From Primary Care to Specialized Mental Health Care: A Randomised Controlled Trial Testing the Effectiveness of a Stepped Care Program Among Primary Care Patients With Mood or Anxiety Disorders. BioMed Central, 2009.

Seekles, Wike, et al. Stepped Care for Depression and Anxiety: From Primary Care to Specialized Mental Health Care: A Randomised Controlled Trial Testing the Effectiveness of a Stepped Care Program Among Primary Care Patients With Mood or Anxiety Disorders. BioMed Central, 2009.