Medical Care. 45(4):300-307, April 2007.
Fredric D. Wolinsky, Thomas R. Miller, Hyonggin An, John F. Geweke, Robert B. Wallace, Kara B. Wright, Elizabeth A. Chrischilles, Li Liu, Claire B. Pavlik, Elizabeth A. Cook, Robert L. Ohsfeldt, Kelly K. Richardson, Gary E. Rosenthal