Mhairi Mackenzie*, Fiona Turner, Stephen Platt, Maggie Reid, Yingying Wang, Julia Clark, Sanjeev Sridharan and Catherine A O'Donnell
* Corresponding author: Mhairi Mackenzie mhairi.mackenzie@glasgow.ac.uk
BMC Health Services Research 2011, 11:350 doi:10.1186/1472-6963-11-350