[1] UCL, Inst Ophthalmol, 11-43 Bath St, London EC1V 9EL, England
[2] Fdn Banca Occhi Veneto Onlus, Venice, Italy
[3] Royal Liverpool Univ Hosp, St Pauls Eye Unit, Liverpool, Merseyside, England
[4] Southend NHS Univ Hosp, Dept Ophthalmol, Southend On Sea, England
[5] Villa Igea Private Hosp, Dept Ophthalmol, Forli, Italy
[6] Moorfields Eye Hosp NHS Trust Fdn, London, England
[7] Reg Ctr Transplant Coordinat, Padua, Italy
[8] Univ Ferrara, Dept Morphol Surg & Expt Med, Ferrara, Italy