The embodiment of wastewater data for the estimation of illicit drug consumption in Spain - Bijlsma, Lubertus; Pico, Yolanda; Andreu, Vicente; Celma, Alberto; Estevez-Danta, Andrea; Gonzalez-Marino, Iria; Hernandez, Felix; Lopez de Alda, Miren; Lopez-Garcia, Ester; Maria Marce, Rosa; Miro, Manuel; Montes, Rosa; et al. (Science Of The Total Environment, 2021)