TY - JOUR T1 - ABSTRACTS JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 740 LP - 743 DO - 10.1136/bjo.23.11.740-a VL - 23 IS - 11 A2 - , Y1 - 1939/11/01 UR - http://bjo.bmj.com/content/23/11/740.2.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -