5Younai S, Nichter Ls, Wellisz T, et al. Modulation of collagen synthesis by transforming growth factor-β in keloid and hypertrophic scar fibroblasts. Ann Plast Surg, 1994, 33:148.
6Risco JM, Human A, Antonios SR.A case of corneal keloid: Clinical, surgical, pathological, and ultrastructural characteristics. Br J Opthalmol, 1994, 78:568.