Eagles, J. M., Hunter, D. & McCance, C. (1988) Decline in the diagnosis of schizophrenia among first contacts with psychiatric services in north-east Scotland, 1969–84. British Journal of Psychiatry, 152, 793–798.
Kendell, R. E., Malcolm, D. E. & Adams, W. (1993) The problem of detecting changes in the incidence of schizophrenia. British Journal of Psychiatry, 162, 212–218.
Kendrick, S. & Clark, J. (1993) The Scottish Record Linkage System. Health Bulletin, 51, 72–79.