John Henry Kettle studied at Sydney University where he was President of the Medical Society 1952-3. He graduated MB BS in 1951 and became resident medical officer at the Royal North Shore Hospital in Sydney 1951-2. He came to England and was surgical registrar at St Luke's Hospital, Guildford, Surr

Lou Opit was Professor of Community Medicine at the University of Kent at Canterbury. He was born in Curra Mulka, South Australia, on 22 November 1927. His father, Leon, was a medical practitioner, and his mother was Bertha née Goldman. He was educated at St Peter's Collegiate School, Adelaide, and