Authors: J S Sunness; J Gonzalez-Baron; C A Applegate; N M Bressler; Y Tian; B Hawkins; Y Barron; A Bergman Journal: Ophthalmology Date: 1999-09 Impact factor: 12.079
Authors: Robbie C Foy; Barny Foot; Jill Francis; Usha Chakravarthy; Richard P L Wormald Journal: BMC Health Serv Res Date: 2005-05-10 Impact factor: 2.655