1. Lawrence JS (1977) Rheumatism in populations. Heinemann, London, pp 104?133
2. Frosst CE (1982) The impact of arthritis on the Australian community. IMG Consultants, Sydney, pp 1?9
3. Wolfe AM (1968) The epidemiology of rheumatoid arthritis: a review. Bull Rheum Dis 19:518?521
4. Nuki G, Brooks R, Buchanan WW (1973) Economics of arthritis. Bull Rheum Dis 23:726?733
5. Cooper B, Rice D (1976) The economic cost of illness revisited. Soc Sci Bull 39:21?36