The Advancing Understanding of Transportation Options (AUTO) study: design and methods of a multi-center study of decision aid for older drivers oleh Marian E. Betz, Faris Omeragic, Lauren Meador, Carolyn G. DiGuiseppi, Nicole R. Fowler, S. Duke Han, Linda Hill, Rachel L. Johnson, Christopher E. Knoepke, Daniel D. Matlock, Ryan Moran, on behalf of the AUTO Research Team