Authors: D B Matchar; E Z Oddone; D C McCrory; L B Goldstein; P B Landsman; G Samsa; R H Brook; C Kamberg; L Hilborne; L Leape; R Horner Journal: Health Serv Res Date: 1997-08 Impact factor: 3.402
Authors: Helen Snooks; Julie Peconi; James Munro; Wai-Yee Cheung; Jaynie Rance; Anne Williams Journal: BMC Health Serv Res Date: 2009-09-30 Impact factor: 2.655