TY - JOUR T1 - Corrigendum JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 260 LP - 260 DO - 10.1136/bjo.28.5.260 VL - 28 IS - 5 A2 - , Y1 - 1944/05/01 UR - http://bjo.bmj.com/content/28/5/260.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -