Complex sentence: He obtained his degree in medicine from the University of Milan in 1952, and soon decided to dedicate his professional activity to the study and treatment of cancers; after brief periods in England and France, he joined the Italian Cancer Institute in Milan as a volunteer.
Split into simpler sentences: He obtained his degree in medicine from the University of Milan in 1952, and soon decided to dedicate his professional activity to the study and treatment of cancer. After spending brief periods in England and France, he joined the Italian Cancer Institute in Milan as a volunteer.