1. Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
2. Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Aarhus, Denmark
3. Department of River Ecology, Helmholtz Centre for Environmental Research – UFZ, Magdeburg, Germany
4. Section of Microbiology, Department of Bioscience; Aarhus University, Aarhus, Denmark