Go to the website http://www.bmj.com/cgi/content/abstract/bmj.38978.699583.55v1?hrss=1 And read the rapid responses from Nina Berry and Alison Barrett who do a good job of explain just why this study is problematic in design. Karleen Gribble Australia *********************************************** Archives: http://community.lsoft.com/archives/LACTNET.html Mail all commands to [log in to unmask] To temporarily stop your subscription: set lactnet nomail To start it again: set lactnet mail (or [log in to unmask]) To unsubscribe: unsubscribe lactnet or ([log in to unmask]) To reach list owners: [log in to unmask]