Authors: Andrew J Karter; Melissa M Parker; Howard H Moffet; Ameena T Ahmed; Julie A Schmittdiel; Joe V Selby Journal: Health Serv Res Date: 2009-06-03 Impact factor: 3.402
Authors: Richard A Hirth; Marc N Turenne; John R C Wheeler; Qing Pan; Yu Ma; Joseph M Messana Journal: Health Serv Res Date: 2009-06-22 Impact factor: 3.402