1. Clark, T. J. H. and Godfrey, S. (eds) (1983). Epidemiology in Asthma ( London: Chapman & Hall )
2. Pepys, J. (1967). Hypersensitivity to inhaled organic antigens. J. R. Coll. Phys.
2, 42–8
3. Martin, A. J. et al. (1980). Br. Med. J., 280, 1391
4. Godfrey, S. (1983). The wheezy infant. In Recent Advances in Paediatrics, No
7, ( Edinburgh and London: Churchill Livingstone )
5. Editorial (1981). Asthma—a challenge for general practice. J. R. Coll. Gen. Pract., 31, 323–4