title: Reply from the authors and part of the investigation team.
authors.affiliation: Department of Surveillance and Coordination, Public Health Agency of Sweden, Sweden. Electronic address: caroline.schonning@folkhalsomyndigheten.se.
authors.forename: C
authors.initials: C
authors.lastname: Schönning
authors.affiliation: Oral and Maxillofacial Surgery Section of the Department of Plastic and Maxillofacial Surgery, Uppsala University Hospital, Sweden.
authors.forename: P
authors.initials: P
authors.lastname: Lundholm
authors.affiliation: Section of Clinical Microbiology, Department of Medical Sciences, Uppsala University, Sweden.
authors.forename: B
authors.initials: B
authors.lastname: Lytsy