1. Donnelly J (2005) Should we include deep tissue injury in pressure ulcer staging systems? The NPUAP debate. J Wound Care 14(5):207–210.
2. Daniel RK, Priest DL, Wheatley DC (1981) Etiologic factors in pressure sores: an experimental model. Arch Phys Med Rehabil 62:492–498.
3. Dinsdale SM (1974) Decubitus ulcers: role of pressure and friction in causation. Arch Phys Med Rehabil 55:147–152.
4. Kosiak M (1961) Etiology of decubitus ulcers. Arch Phys Med Rehabil 42:19–29.
5. Appell HJ, Gloser S, Soares JMC, Duarte JA (1999) Structural alterations of skeletal muscle induced by ischemia and reperfusion. Basic Appl Myol 9(5):263–268.