Pérou (2) Students (2) Medicine (2) Materials (2) Health (2) Factores (2) Salud (2) Estudiantes (2) Materiales (2) Medicina (2) régression (2) Programs (1) Women scientists (1) Women (1) Weights and measures (1) Universities and colleges (1) Time (1) Technology (1) Strategy (1) Sex (Biology) (1) Scientists (1) Science (1) Research (1) Proportion (1) Population (1) Picture frames and framing (1) Periodicals (1) Occupations (1) Months (1) Meetings (1)