Funding for this research was provided by:
Swiss Federal office of Public Health
Article History
Received: 2 November 2017
Accepted: 25 March 2018
First Online: 3 April 2018
Ethics approval and consent to participate
: Analysis and publication of the data presented in the study were done in agreement with the steering committee of the Swiss Centre for Antibiotic Resistance (ANRESIS).
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.