1. WHO Collaborating Centre for Gonorrhoea and Other STIs, Department of Laboratory Medicine, Microbiology, Örebro University Hospital; SE-701 85 Örebro Sweden
2. Hubert Department of Global Health, Rollins School of Public Health of Emory University and Department of Medicine, Division of Infectious Diseases
3. Department of Microbiology and Immunology; Emory University School of Medicine; Atlanta GA 30322
4. Veterans Affairs Medical Center (Atlanta); Decatur GA 30033