(Q68018583)
Statements
Results of the Prospective Evaluation of Radial Keratotomy (PERK) Study five years after surgery. The Perk Study Group (English)
G O Waring
M J Lynn
A Nizam
M H Kutner
J W Cowden
W Culbertson
P R Laibson
M B McDonald
J D Nelson
1 August 1991