Dear Colleagues, Here is another lovely offering from Richard Lehman which you can find by visiting www.cebm.net<http://www.cebm.net> and clicking on Journal Watch. All good wishes, Olive Olive Goddard Centre Manager Centre for Evidence-Based Medicine Department of Primary Health Care Old Road Campus Headington, Oxford OX3 7LF Tel +44(0)1865 289337 Fax +44(0)1865289336 [log in to unmask]<mailto:[log in to unmask]> www.cebm.net