1. Review Article: Critiques of the risk concept — valid or not?
2. Risk as feelings.
3. Sackett DL Strauss SE Richardson WS (2000) Evidence-based medicine: how to practice and teach EBM (Churchill-Livingston, Edinburgh).
4. National Institute for Health and Clinical Excellence , ed (2005) Referral for suspected cancer: a clinical practice guideline. National Clinical Practice Guideline Number 27 (National Institute for Health and Clinical Excellence, London).
5. NICE suspected cancer guidelines;Mulka;Br J Gen Pract,2005