Focus groups (3) Students (3) Perception (3) Health (3) AIDS (Disease) (3) Grupos de discusión (3) Salud (3) Estudio (3) SIDA (3) Estudiantes (3) Percepción (3) Espagne (2) Education (2) Youth (2) Social perception (2) Sexual intercourse (2) Sex instruction (2) Sex (Biology) (2) Sex (2) Prejudices (2) Outbuildings (2) Matter (2) Interviews (2) Infection (2) Families (2) Education, Compulsory (2) Education (2) Communities (2) Commons (2) College students (2)