For which study would you like to enter patient data?

International, multicenter, comparative clincal trial on deep anterior lamellar keratoplasty (DALK) versus penetrating keratoplasty	DALK study protocol
Participating clinics:
Professor dr Jorge L. Alio, Instituto Oftalmologico de Alicante, Alicante, Spain
Mr Francisco C. Figueiredo, Royal Victoria Infirmary, Newcastle upon Tyne, UK
Mr Nabil Habib, Royal Eye Infirmary, Plymouth, UK
Dr Carla P. Nieuwendaal, Academic Medical Center, Amsterdam, The Netherlands
Dr Hakon Oritsland, University Hospital of Tromso, Tromso, Norway
Dr Robert-Jan Wijdh, University of Groningen, Groningen, The Netherlands
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International, multicenter clincal trial on posterior lamellar keratoplasty (PLK)	PLK study protocol
Participating clinics:
Dr Francis Price, Price Vision Group, Indianapolis, USA
Professor dr Jean-Marc Legeais, Hotel Dieu, Paris, France
Dr Srinivas K. Rao, Sankara Nethralaya Hospital, Chennai, India
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International, multicenter clincal trial on trypan blue staining of epiretinal membranes	TB-RETINA study protocol
Participating clinics:
Dr Francisco Aguilera Teba, Instituto Oftalmico de Jaen, Jaen, Spain
Dr Andreas Mohr, Krankenhaus Sankt Josef Stift, Bremen, Germany