1.Gessain, A, Barin, F, Vernant, JC, Gout, O, Maurs, L, Calerder, A. Antibodies to human lymphotropic virus type 1 in patients with tropical spastic paraparesis. Lancet 1985; 2: 407–10.
2.Rodgers-Johnson, PE, Garruto, RM. Tropical myeloneuropathies – a new aetiology. Trends Neurosci 1988; 526–32.
3.Cruickshank, JK, Rudge, P, Newton, M. Dalgleish, AG, McLean, BN, Barnard, RO. Tropical spastic paraparesis and human T cell lymphotropic virus type 1 in the United Kingdom. Brain 1989; 112: 1057–90.
4.Smith, CR, Dickson, D, Samkoss, L. Recurrent encephalopathy and seizures in a US native with HTLV-1 associated myclopathy/tropical spastic paraparesis: a clinicopathologic study. Neurology 1992; 42: 658–61.
5.Folstein, MF, Folstein, SE, McHugh, PR. Mini-mental state: a practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res 1975; 12: 189–98.
6.American Psychiatric Association Diagnostic and Statistical Manual of Mental disorders (3rd rev ed) (DSM III-R), Washington. DC:APA, 1987.
7.Feinstein, A, du Boulay, G, Ron, MA. Psychotic illness in multiple sclerosis: a clinical and magnetic resonance study. Br J Psychiatry 1992; 161: 680–5.
8.Ron, MA, Logsdail, SJ. Psychiatric morbidity in multiple sclerosis: a clinical and MRI study. Psychol Med 1989; 19: 887–95.
9.Feinstein, A, Ron, MA. Psychosis associated with demonstrable brain disease. Psychol Med 1990; 20: 793–803.