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4. Brit;CHARAMIS, J.;Trachome,1957
5. Amer;PATTERSON, A.; FOX, A.D.; DAVIES, G.; MAGUIRE, C.; SELLERS, P.J.H.O.L.M.E.S.; WRIGHT, P.; RICE, N.S.C.; COBB, B.; JONES, B.R.;Ibid; "Corneo-Plastic Surgery: Proc. of II; Brit,1963