1. Sexually Transmitted Disease Control Branch, Division of Communicable Disease Control, California Department of Public Health, Richmond
2. Division of Sexually Transmitted Disease Prevention, Centers for Disease Control and Prevention, Atlanta, Georgia
3. Kaiser Permanente Northern California Regional Laboratory, Berkeley
4. Southern California Permanente Medical Group Regional Reference Laboratory, North Hollywood
5. San Francisco Department of Public Health, California
6. Southern California Permanente Medical Group, California