RT Journal Article SR Electronic T1 Auditing cataract surgery nationwide JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 817 OP 817 DO 10.1136/bjo.2006.095489 VO 90 IS 7 A1 D Wong YR 2006 UL http://bjo.bmj.com/content/90/7/817.abstract AB