1Portonoy SL, Insler MS, Kaufman HE. Surgical management of comeal ulceration and perforation[J]. Survey of Ophthalmology, 1989,34( 1 ):47-57.
2AdinofliM, AkleCA, McCollI, etal. Expression of HLA antigens, β2-microglobulin and enzymes by human amniotic membrane[J]. Nature, 1982,295(28):325-327.