1. 1) Tatsumi T, Nakagomi S: A study on psychological acceptance to injury in athletes: analysis from the viewpoint of athletic-rehabilitation behavior. Jpn J Sp Psycho, 1999, 26: 46–57.
2. 2) Engel GL: Is grief a disease? A challenge for medical research. Psychosom Med, 1961, 23: 18–22.
3. 3) Kubler-Ross: On Death and Dying. New York: Macmillan, 1969.
4. 4) Lazarus RS, Folkman S: Stress, Appraisal, and Coping. New York: Springer, 1984.
5. 5) Peretz D: Development, object-relationships, and loss. In: Schoenberg B, Carr AC, Peretz D, Kutscher AH (Eds): Loss and grief: Psychological management in medical practice. New York: Columbia University Press, 1970.