About the Authors
- Sjoerd M. Euser
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* E-mail: s.euser@streeklabhaarlem.nl
Affiliation Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
- Nico J. Nagelkerke
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Affiliation Department of Community Medicine, United Arab Emirates University, Al-Ain, United Arab Emirates
- Frank Schuren
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Affiliation TNO Microbiology and Systems Biology, Zeist, The Netherlands
- Ruud Jansen
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Affiliation Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
- Jeroen W. Den Boer
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Affiliation Regional Public Health Laboratory Kennemerland, Haarlem, The Netherlands
Competing Interests
Vitens water supply company (www.vitens.nl) has provided financial support for this study, and this does not alter the authors’ adherence to all the PLOS ONE policies on sharing data and materials.
Author Contributions
Conceived and designed the experiments: SE NN FS JD. Performed the experiments: SE NN FS RJ. Analyzed the data: SE NN FS RJ JD. Contributed reagents/materials/analysis tools: RJ NN. Wrote the paper: SE NN FS RJ JD.