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2. Pressure sores in elderly patients;Versluysen;J Bone Joint Surg,1985
3. Changes in transcutaneous oxygen tension as a result of prolonged pressures at the sacrum;Bader;Clin Phys Physiol Meas,1988
4. Decubitus ulcers: role of pressure and friction in causation;Dinsdale;Arch Phys Med Rehab,1974
5. Shear versus pressure as causative factors in skin blood flow occlusion;Bennett;Arch Phys Med Rehab,1979