Blackmon D M, Calvert H M, Henry P M, Westfall C T
Department of Ophthalmology, University of Arkansas for Medical Sciences, 4301 W Markham St, Mail Slot #523, Little Rock, AR 72205, USA.
Arch Ophthalmol. 2000 Nov;118(11):1585-6. doi: 10.1001/archopht.118.11.1585.