 Complete the following phrase:  Colton qualified in medicine and surgery in 1960, studying at St Thomass Hospital Medical School in London. He became a Fellow of the Royal College of Surgeons of England in 1963. He pursued a career as an orthopaedic surgeon, studying in Bristol, at the Royal National Orthopaedic Hospital in London, and at Dala Orthopaedic Hospital at Kano in Northern Nigeria during the 