PubMed:: "Corneal Transplantation"[Mesh] OR "Cornea/transplantation"[Mesh] OR (Cornea[mesh] OR cornea*[tiab]) AND (transplant*[tiab] OR graf*[tiab]) OR keratoplast*[tiab];; Embase.com:: 'keratoplasty'/exp OR keratoplast*:ab,ti OR ('cornea'/exp OR cornea*:ab,ti AND (transplant*:ab,ti OR graf*:ab,ti));; PsycInfo:: ((TI cornea* OR AB cornea* OR DE "Cornea") AND (TI ( (transplant* OR graf*) ) OR AB ( (transplant* OR graf*) ))) OR TI keratoplast* OR AB keratoplast*;; Cochrane Library:: "corneal transplantation" OR keratoplast* OR (cornea AND (transplant* OR graf*))
