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Wijngaard RR, van der Perk M, van der Grift B, de Nijs TCM, Bierkens MFP.Wijngaard RR, et al. Among authors: bierkens mfp.Water Air Soil Pollut. 2017;228(3):107. doi: 10.1007/s11270-017-3261-4. Epub 2017 Feb 17.Water Air Soil Pollut. 2017.PMID: 28260820Free PMC article.