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.
Been, F; Bijlsma, L; Benaglia, L; Botero-Coy, A M; Castiglioni, S; Kraus, L; Zobel, F; Schaub, Michael P; Bücheli, A; Hernandez, F; Delémont, O; Esseiva, P; Ort, C (2016). Assessing geographical differences in illicit drug consumption - A comparison of results from epidemiological and wastewater data in Germany and Switzerland. Drug and Alcohol Dependence, (161):189-199.