Peter Christie Anderson was an orthopaedic surgeon and a specialist in rehabilitation medicine in Perth, Western Australia. He was born in Sheffield on 23 September 1929, the eldest son of James Christie Anderson, a urological surgeon and a fellow of the Royal College of Surgeons, and Mary Ann Ander

Basil John Steele Grogono was a professor of surgery at Dalhousie University, Halifax, Nova Scotia, Canada. He was born in Risbridge, Suffolk on 9 December 1922, the son of Jonathan Grogono, medical officer of Epsom College, and Sissy Grogono née Steele. He had an identical twin brother, Geoffrey Ru