Maintenance work on the ZORA database servers is scheduled for Thursday 25th July 2019 from 19:00-20:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
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Fent, R; Rosemann, T; Fässler, M; Senn, O; Huber, C A (2011). The use of pure and impure placebo interventions in primary care - a qualitative approach. BMC Family Practice, 12:11.