Geographic variation and trends in carotid imaging among medicare beneficiaries, 2001 to 2006.
Curtis
Lesley H
LH
Duke Clinical Research Institute, Department of Medicine, Duke University School of Medicine, Durham, NC, USA. lesley.curtis@duke.edu
Greiner
Melissa A
MA
Patel
Manesh R
MR
Duncan
Pamela W
PW
Schulman
Kevin A
KA
Matchar
David B
DB