Causanilles, A., Baz-Lomba, J. A., Burgard, D. A., Emke, E., González-Mariño, I., Krizman-Matasic, I., … Bijlsma, L. (2017). Improving wastewater-based epidemiology to estimate cannabis use: focus on the initial aspects of the analytical procedure. Analytica Chimica Acta, 988, 27-33. https://doi.org/10.1016/j.aca.2017.08.011