title: Response to the letter to the editor.
authors.affiliation: Department of Obstetrics and Gynaecology, Faculty of Medicine and Health Sciences, Ghent University, De Pintelaan 185, 9000, Ghent, Belgium. hans.verstraelen@ugent.be.
authors.forename: Hans
authors.initials: H
authors.lastname: Verstraelen
authors.affiliation: Laboratory for Molecular Genetics, Polymicrobial Infections and Bacterial Biofilms, Department of Medicine, Gastroenterology, Charité Hospital, CCM, Universitätsmedizin Berlin, Berlin, Germany.
authors.forename: Alexander
authors.initials: A
authors.lastname: Swidsinski