1. Engel GL. The need for a new medical model: a challenge for biomedicine. Science 1977;196:129–136.
2. Committee on Quality of Health Care in America. Crossing the Quality Chasm: A New Health System for the 21st Century. Washington, DC: Institute of Medicine, 2001.
3. Gerteis M, Edgman-Levitan S, Daley J, Delbanco TL. Through the Patient’s Eyes: Understanding and Promoting Patient-Centered Care. Jossey-Bass Health Series. San Francisco, CA: Jossey-Bass, 1993.
4. Rybarczyk BD, Nyenhuis DL, Nicholas JJ, Schulz R, Alioto RJ, Blair C. Social discomfort and depression in a sample of adults with leg amputations. Arch Phys Med Rehabil 1992;73:1169–1173.
5. Frank RG, Elliott TR, Corcoran J, Wonderlich S. Depression after spinal cord injury: is it necessary? Clin Psychol Rev 1987;7:611–630.