A J Smith1, N O A Palmer2,3, R A Seaton4, A Ternhag5. 1. Scottish Antimicrobial Prescribing Group-Dental, University of Glasgow, UK. 2. Health Education England-North West, Liverpool, UK. 3. University of Liverpool, Liverpool, UK. 4. Queen Elizabeth University Hospital, Glasgow, UK. 5. Department of Medicine Solna, Infectious Diseases Unit, Karolinska Institutet, Stockholm, Sweden.