We develop a theory of cyclical unemployment, which relates the processes of job creation and job destruction over the business cycle, to the processes of restructuring, innovation and implementation arising from a model of endogenous cyclical growth. Due to a moral hazard problem, production workers are paid efficiency wages and experience involuntary unemployment. The model captures two key c...

Seven diabetic girls who presented with cyclical disturbance of diabetic control before the menarche are described. In six girls cyclical hyperglycaemia occurred and in one cyclical hypoglycaemia. The index case is described in detail, and is then included in a description of the main clinical features of all seven cases. Cyclical disturbance of diabetic control may present in diabetic girls fr...