Comparing illicit drug use in 19 European cities through sewage analysis

Kevin V. Thomas, Lubertus Bijlsma, Sara Castiglioni, Adrian Covaci, Erik Emke, Roman Grabic, Félix Hernández, Sara Karolak, Barbara Kasprzyk-Hordern, Richard H. Lindberg, Miren Lopez de Alda, Axel Meierjohann, Christoph Ort, Yolanda Pico, José B. Quintana, Malcolm Reid, Jörg Rieckermann, Senka Terzic, Alexander L N van Nuijs, Pim de Voogt