title: Primary corneal graft failure. A national reporting system.
mesh_terms: D003315:Cornea / Q000601:surgery*; D005125:Eye Banks; D006084:Graft Rejection / Q000453:epidemiology / Q000209:etiology*; D006801:Humans; D015994:Incidence; D015948:Keratoplasty, Penetrating / Q000009:adverse effects*; D012042:Registries / Q000706:statistics & numerical data; D012307:Risk Factors; D014481:United States / Q000453:epidemiology