GreggD. (1939). The paucity of arthritis among psychotic cases. Amer. J. Psychiat., 95: 853.
3.
HareE. H. (1967). The epidemiology of schizophrenia. In: CoppenA.WalkA. (Eds.) Recent Developments in Schizophrenia. Headley Brothers, Ashford, Kent
4.
HuxleyJ.MayrE.OsmondH.HofferA. (1964). Schizophrenia as a genetic morphism. Nature, 204: 220.
5.
LawrenceJ. S. (1961). Prevalence of rheumatoid arthritis. Ann. Rheum. Dis., 20: 11.
6.
MellsopG. W.KoadlowL.SymeJ.WhittinghamS. (1972). Absence of rheumatoid arthritis in schizophrenia: a clue to aetiology. Arth. & Rheum., (in press).
7.
MikkelsenW. M.DodgeH. J.DuffI. F.KateH. (1967). Estimates of the prevalence of rheumatic diseases in the population of Tecumseh, Michigan, 1956–1960. J. chron. Dis., 20: 351.
8.
NissenH. A.SpencerK. A. (1936). The psychogenic problem (endocrinal and metabolic) in chronic arthritis. New Eng. J. Med., 214: 576.
9.
PilkingtonT. L. (1956). The coincidence of rheumatoid arthritis and schizophrenia. J. nerv. ment. Dis., 124: 604.
10.
RopesM.BennettG. A.CobbS.JacerR.JessorR. A. (1959). Diagnostic criteria for rheumatoid arthritis. Ann. Rheum. Dis., 18: 49.
11.
RossW. D.HayJ.McDowallM. F. (1950). The incidence of certain vegetative disturbances in relation to pschosis. Psychosomatic Med., 12: 179.
12.
RothermichN. O.PhilipsV. K. (1963). Rheumatoid arthritis in criminal and mentally ill patients. Arth. & Rheum., 6: 639.
13.
SjögrenT. (1948). Genetic-statistical and psychiatric investigations of a West Swedish population. Acta psychiat. neurol., Suppl. 52.
14.
TrevathanR. D.TatumJ. C. (1954). Rarity of concurrence of psychosis and rheumatoid arthritis in individual patients. J. nerv. ment. Dis., 120: 83.