References
- Lassen H CA, Henriksen E, Neubrich F, Kristensen H. Treatment of tetanus: severe bone-marrow depression after prolonged nitrous oxide anaesthesia. Lancet 1956; 1: 527–530
- Layzer RB. Myeloneuropathy after prolonged exposure to nitrous oxide. Lancet 1978; 2: 1227–1230
- Flippo TS, Holder WD. Neurologic degeneration associated with nitrous oxide anaesthesia in patients with vitamin B12 deficiency. Archives of Surgery 1993; 128: 1391–1395
- Schilling RF. Is nitrous oxide a dangerous anaesthetic for vitamin B12-deficient subjects?. Journal of the American Medical Association 1986; 255: 1605–1606
- Burvill PW, Jackson JM, Smith WG. Psychiatric symptoms due to vitamin B12 deficiency without anaemia. Medical Journal of Australia 1969; 2: 388–390
- Edwin E, Holten K, Norum KR, Schrumpf A, Skaug OE. Vitamin B12 hypovitaminosis in mental diseases. Acta Medica Scandinavica 1965; 177: 689
- Henderson JG, Strachan RW, Beck JS, Dawson AA, Daniel M. The antigastric antibody test as a screening procedure for vitamin B12 deficiency in psychiatric practice. Lancet 1966; 2: 809–813
- Carney M WP, Sheffield BE. Associations of subnormal serum folate and vitamin Bl2 values and effects of replacement therapy. Journal of Nervous and Mental Disease 1970; 150: 404–412
- Shulman R. A survey of vitamin B12 deficiency in an elderly psychiatric population. British Journal of Psychiatry 1967; 113: 241–251
- Lishman WA. Organic psychiatry. Blackwell Scientific Publications, Oxford 1987
- Veith I. Hysteria, the history of a disease. University of Chicago Press, Chicago 1965
- Slater E. Diagnosis of ‘Hysteria’. British Medical Journal 1965; 1: 1395–1399
- Watson CG, Buranen C. The frequency and identification of false positive conversion reactions. Journal of Nervous and Mental Disease 1979; 167: 243–247
- Gould R, Miller BL, Goldberg MA, Benson FD. The validity of hysterical signs and symptoms. Journal of Nervous and Mental Disease 1986; 174: 593–597