RT Journal Article SR Electronic T1 Cataract and season of birth JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 126 OP 126 DO 10.1136/bjo.83.1.126a VO 83 IS 1 A1 R A WEALE YR 1999 UL http://bjo.bmj.com/content/83/1/126.2.abstract AB