1. Principles and Practices of Screening for Disease;Wilson,1968
2. Principles of screening and surveillance;Parsonnet;Am J Gastroenterol,1996
3. National Screening Committee, First Report of the National Screening Committee, Health Departments of the United Kingdom, 1998
4. The process of genetic counselling. Beyond non-directiveness;Clarke,1997
5. Shared decision-making and non-directiveness in genetic counselling;Elwyn;J Med Genet,2000