1. Harris E C, Barraclough B M . Suicide as an outcome for medical disorders. Medicine 1994; 73: 281–296.
2. Breslow N E, Day N E . Statistical methods in cancer research. Volume II. The analysis of cohort studies. International Agency for Research on Cancer: Lyon 1987.
3. Kreitman N B . Aspects of the epidemiology of suicide and ‘attempted suicide’ (parasuicide). In: Waldenstrom J, Larsson T, Ljungstedt N. (eds) Suicide and attempted suicide. Skandia: Stockholm, 1972, pp 45–52.
4. DeVivo M J, Stover S L . Long-term survival and causes of death. In: Stover SL, De Lisa JA, Whiteneck GG. (eds) Spinal cord injury. Clinical outcomes from the Model Systems. Aspen Publishers, Inc: Gaithersburg, 1995, pp 289–316.
5. Whiteneck G G et al, Mortality, morbidity, and psychosocial outcomes of persons spinal cord injured more than 20 years ago. Paraplegia 1992; 30: 617–630.