1. Absence of abnormal erythrocyte superoxide dismutase, copper, or zinc levels in patients with retinitis pigmentosa. Issue 7 (July 1982) Authors: Crouch, R. K.; Chambers, J. K. Journal: British journal of ophthalmology Issue: Volume 66:Issue 7(1982) Page Start: 417 Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗