1. Blood cholesterol testing: the cost effectiveness of opportunistic cholesterol testing;Committee, Standing Medical Advisory,1990
2. Principles of biomedical ethics;in, Quoted; L, Childress J.F.
3. See reference (2): 127-134.
4. Causing death and saving lives;B, Glover J.C.,1977
5. The problem of abortion and the doctrine of the double effect;Foot, P.,1975