1. Department of Clinical Microbiology, Cork University Hospital, Wilton, Cork, Ireland
2. Department of Clinical Microbiology, Beaumont Hospital, Dublin 9, Ireland
3. Department of Clinical Microbiology, Royal College of Surgeons in Ireland University of Medicine and Health Sciences, Education and Research Centre, Beaumont Hospital, Dublin 9, Ireland
4. Department of Chemistry, Royal College of Surgeons in Ireland University of Medicine and Health Science, 123 St. Stephen’s Green, Dublin 2, Ireland