RT Journal Article SR Electronic T1 People and eyes: statistical approaches in ophthalmology JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 971 OP 973 DO 10.1136/bjo.82.8.971 VO 82 IS 8 A1 I E MURDOCH A1 S S MORRIS A1 S N COUSENS YR 1998 UL http://bjo.bmj.com/content/82/8/971.abstract AB