Complex sentence: As a teacher, she has taught at the Center for Scientific Studies ("Centro de Estudios Científicos") between 1984 and 2002, and the Faculty of Medicine at the University of Chile since 1984.
Split into simpler sentences: As a teacher, she taught at the Center for Scientific Studies ("Centro de Estudios Científicos") between 1984 and 2002. She has taught at the Faculty of Medicine at the University of Chile since 1984.