General Hospital | hospital | Massachusetts General Hospital | Guy's Hospital | St Bartholomew's Hospital | Johns Hopkins Hospital | St. Jude Children's Research Hospital | Fairfield | Hospital | McLean Hospital | Middlesex Hospital | Princess Margaret Hospital | Westminster Hospital | St George's Hospital | Mount Sinai Hospital | St Thomas' Hospital | Great Ormond Street Hospital | Fairfield University | teaching hospital | Children's Hospital of Philadelphia | University College Hospital | Hospital Corporation of America | Hammersmith Hospital | Fairfield, Connecticut | University Hospital of Lausanne | St. Luke's-Roosevelt Hospital Center | National Hospital for Neurology and Neurosurgery | Christ's Hospital | Brigham and Women's Hospital | Austin Hospital, Melbourne |
After an initial residency at The Alfred Hospital, Gust was appointed as a pathology registrar at the Fairfield Infectious Diseases Hospital, Melbourne, Australia; then spending two years in the United Kingdom at the London School of Hygiene and Tropical Medicine and the WHO Regional Virus Laboratory in Glasgow.