RT Journal Article SR Electronic T1 Pterygium: are we any closer to the cause? JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 423 OP 424 DO 10.1136/bjophthalmol-2013-304232 VO 98 IS 4 A1 Jern Chen A1 Sundas Maqsood A1 Stephen Kaye A1 Adrian Tey A1 Sajjad Ahmad YR 2014 UL http://bjo.bmj.com/content/98/4/423.abstract AB