Received: 24 October 2017
Accepted: 15 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: An ethical clearance was not necessary for this assessment in line with national laws and regulations. The reason is that no person-related data are presented, only case numbers from a super-national health authority and data from a microbiological assessment, which did not include any human samples.
: The authors declare that there are no conflicts of interest according to the guidelines of the International Committee of Medical Journal Editors.