Dear Ray and Osher, If you are planning to continue this debate, could you please do so between yourselves off-list and then let us know what you conclude. Alison __________________________________________________________________ Alison Macfarlane St Bartholomew School of Nursing and Midwifery 20 Bartholomew Close West Smithfield Tel 0207 040 5832 London EC1A 7QN Email [log in to unmask] _________________________________________________________________ ****************************************************** Please think before you press the 'Reply' button! Note that if you press the 'Reply' button your message will go the individual who posted this message not to the list. With many mailers you will have a 'Reply-to-All' button that will send automatically to the list address of <[log in to unmask]>. The Radstats list is set up for public discussion so please be generous with your thoughts and share them us all. *******************************************************