1. Department of Microbiology, Shrewsbury and Telford Hospital NHS Trust, Telford TF1 6TF
2. Department of Genito-urinary Medicine, Telford and Wrekin NHS PCT, Telford TF1 6TF
3. Department of Sexual Health, Heartlands Hospital, Birmingham B9 5SS
4. Health Protection Agency Public Health Laboratory, Heartlands Hospital, Birmingham B9 5SS, UK