1. S. Storetvedt Heldaas, S. L. Langard, A. Andersen, Incidence of cancer among vinylchloride and polyvinylchloride workers. Br. J. Ind. Med. 441 25–30 (1984).
2. International Programme on Chemical Safety. Environmental Health Criteria for Vinylidene Chloride. IPCS, Genf. 1990.
3. A. Dupont, O. M. Jensen, E. Strámgren, and H. Jablensky, Incidence of cancer in patients diagnosed as schizophrenic in Denmark. In: “Psychiatric Case Registers in Public Health” (G. K. M. M. Ten Horn, R. Giel, W. H. Gulbinot, and J. H. Henderson, Eds.), pp. 229–239. Elsevier, Amsterdam, 1986.
4. P. B. Mortensen, The incidence of cancer in schizophrenic patients. J. Epidemiol. Comm. Health 43, 43–47 (1989).
5. S. Warren, and M. M. Canavan, Frequency of cancer in the insane. N. Engl. J Ned. 210. 739–742 (1934).