Complex sentence: In 1985, he attained a doctoral degree in outpatient pediatric surgery by the Medical School of the State University of Campinas and did his postdoctoral studies abroad, at the Children's Memorial Hospital of Chicago, USA.
Split into simpler sentences: In 1985, he attained a doctoral degree in outpatient pediatric surgery from the Medical School of the State University of Campinas. He did his postdoctoral studies abroad, at the Children's Memorial Hospital of Chicago, USA.