TY - JOUR T1 - A Statistical Analysis of 3,219 Persons JF - British Journal of Ophthalmology JO - Br J Ophthalmol SP - 337 LP - 379 DO - 10.1136/bjo.26.8.337 VL - 26 IS - 8 AU - John Marshall AU - H. E. Seiler Y1 - 1942/08/01 UR - http://bjo.bmj.com/content/26/8/337.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -