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.
Meyer, Christian; Ulbricht, Sabina; Haug, Severin; Broda, Anja; Bischof, Gallus; Rumpf, Hans-Jürgen; John, Ulrich (2016). Motivating smokers to quit using computer-generated letters that target either reduction or cessation: A population-based randomized controlled trial among smokers who do not intend to quit. Drug and Alcohol Dependence, 166:177-186.