All the services delivered are in anonymity; however, the patient usually must furnish both her first and last names and date of birth. Adolescents are also tested. The service hours indicated are those offered for free access: the first 8 persons arriving are guaranteed checkups. On Wednesday and Friday mornings we do only checkups considered urgent or that have been previously coordinated with  the associations. There is also an appointment system for checkups, with a waiting time of  7 to 10 days. Diagnosis and treatment for various infectious diseases are done nearby the same hospital.