TY - JOUR T1 - The Wilmer Ophthalmological Institute JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 621 LP - 622 DO - 10.1136/bjo.13.12.621 VL - 13 IS - 12 A2 - , Y1 - 1929/12/01 UR - http://bjo.bmj.com/content/13/12/621.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -