Estudio (3) Pérou (2) Telephone systems (2) Telephone--Equipment and supplies (2) Health (2) Teléfonos (2) Salud (2) Peruanos (2) Teléfono (2) Telecommunication in medicine (1) Internet (1) Labor (1) Information technology (1) Women physicians (1) Women (1) Students (1) Statistics (1) Self-perception (1) Physicians (1) Perception (1) Occupational diseases (1) Men (1) Medicine (1) Learning, Psychology of (1) Industrial hygiene (1) Industrial accidents (1) Hearing disorders (1) Good and evil (1) Fees, Administrative (1) Electronic mail systems (1)