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Langley, T. and Geiger, W. and Gartlehner, G. (2008): Aromatherapy for pain relief and psychological problems. Systematic review. Decision Support Document 16.

Langley, T. and Geiger, W. and Gartlehner, G. (2008): Bach Flower Remedies for pain relief and psychological problems. Systematic review. Decision Support Document 17.

Radlberger, P. and Zechmeister, I. and Mittermayr, T. (2009): Child and adolescent psychiatry part 2: A systematic review of health economic evaluations . HTA-Projektbericht 28.

Wild, C. (2005): [Sleep disorders: Referral of patients to sleep laboratories]. HTA-Newsletter 39: pp. 3-4.

Wild, C. (2005): [Depression: Screening]. HTA-Newsletter 36: pp. 2-3.