![](/img/cover-not-exists.png)
THE COLLABORATIVE LONGITUDINAL EVALUATION OF KERATOCONUS (CLEK) STUDY: HISTORICAL DATA AND STUDY DESIGN
Barr, Joseph T., Zadnik, Karla, Gordon, Mae O., Edrington, Timothy B.Volume:
71
Journal:
Optometry and Vision Science
DOI:
10.1097/00006324-199412001-00047
Date:
December, 1994
File:
PDF, 191 KB
1994