Fredric D Wolinsky*, Henry W Mahncke, Mark Kosinski, Frederick W Unverzagt, David M Smith, Richard N Jones, Anne Stoddard and Sharon L Tennstedt
* Corresponding author: Fredric D Wolinsky fredric-wolinsky@uiowa.edu
BMC Health Services Research 2009, 9:109 doi:10.1186/1472-6963-9-109