Andersen, KE., O. Jensen, SA. Kvorning, and E. Bach. 1983. “Decubitus Prophylaxis: A Prospective Trial on the Efficiency of Alternating-Pressure Air-Mattresses and Water-Mattresses”. Acta Dermato-Venereologica 63 (3):227-30. https://doi.org/10.2340/0001555563227230.