Leon B. Ellwein

Utility-based estimates of the relative morbidity of visual impairment and angina

B. Littenberg, Scott M. Whitcup, Gregory Fox, 2000, Ophthalmic epidemiology.

Screening and surgical intervention results from cataract-free-zone projects in Campinas, Brazil and Chimbote, Peru

L. Ellwein, R. Mowery, F. Contreras, 1990, International Ophthalmology.