étable (1) comportement (1) risque (1) surveillance (1) épidémie (1) exposition aux risques (1) Genève (1) Monitoring (1) Testing (1) Methods (1) Cases (1) Sexually transmitted diseases (1) Testing (1) Sex (1) Sadness (1) Risk (1) Reason (1) Proportion (1) Population (1) Months (1) Men (1) Experience (1) Examinations--Validity (1) Examinations--Interpretation (1) Examinations (1) Emotions (1) Counseling (1) Beginning (1) Anal sex (1) Ability (1)