1 National Center for HIV/AIDS, Dermatology and Sexually Transmitted Diseases, Phnom Penh, Cambodia.
2 Division of STD Prevention, Centers for Disease Control and Prevention, Atlanta, GA, USA.
3 Global HIV, Hepatitis and STI Programmes, WHO, Geneva Switzerland.
4 New South Wales Health Pathology, Microbiology, Royal Prince Alfred Hospital Camperdown, NSW, Australia.
5 WHO Collaborating Centre for Sexually Transmitted Infections and Antimicrobial Resistance, New South Wales Health Pathology, Microbiology, The Prince of Wales Hospital Randwick, NSW, Australia. Electronic address: firstname.lastname@example.org.