PlomBOX: a low cost bioassay for the sensitive detection of lead in drinking water by Dias, A, Alvarez, M, Gándola, Y, Deisting, A, Alba Posse, E, Arnaldi, H, Asorey, H, Bertou, X, Colque, A, Favela-Pérez, F, Gasulla, J, Gómez Berisso, M, Guerra-Pulido, JO, Lipovetzky, J, Lobera, J, Lovino, MB, Marpegan, L, Martín, D, Mejía Muñoz, S, Monroe, J, Nadra, AD, Pregliasco, R, Rumi, G, Rossen, A