1. Preventing pressure sores in hospital Controlled trials of a large celled Ripple mattress;Bliss;Br Med J,1967
2. A review of pressure sore prophylaxis;Lowthian;Nursing Mirror,1977
3. The use of Ripple beds in hospitals;Bliss;Hosp Health Serv Rev,1979
4. Accuracy of certification of cause of death;Heasman,1966
5. Intimations of quality;Waldron,1977