context: Cantell's parents were Lecturer Lauri Oskar Immanuel Cantell and Hilma Esteri Haapakoski. He married in 1958 nurse Aila Onnia Kokko. Cantell graduated from Mikkeli High School in 1950 and graduated as a Licentiate in Medicine in 1956. He received his doctorate in medicine in 1959. At the beginning of his career, Cantell worked for both the University of Helsinki and the State Serum Department. [2]
question: When did Kari Cantell claim to be a doctor?
answers.text: 1959