The following are the primary investigators for the EXCITE study: Dr. Suel Abujamra, Clínica de Olhos, São Paulo, Brazil; Dr. Bettina Kinge, Omnia Medisinske senter, Oslo, Norway; Dr. Rubens Belfort Jr, Universidade Federal de São Paulo, São Paulo, Brazil; Dr. Ingar S. Johansen, Ullevål universitetssykehus, Oslo, Norway; Prof. Peter Wiedemann, Univ.Leipzig, Klinik und Poliklinik fur Augenheilkunde, Leipzig, Germany; Dr. Walter Takahashi, Hospital das Clinicas da Faculdade de Medicina da USP, São Paulo, Brazil; Prof. Emin Ozmert, Ankara University Medical Faculty, Ankara, Turkey; Prof. Bora Eldem, Hacettepe University Medical Faculty, Ankara, Turkey; Dr. Jordi Mones, Instituto de Microcirugia Ocular, Barcelona, Spain; Dr. Luis Arias, Ciutat Sanitaria I Universsitaria De Bellvitge, Hospitalet de Llobregat, Spain; Dr. Susan Downes, Radcliffe Infirmary, United Kingdom; Dr. Andras Seres, Semmelweis Egyetem I Szemeszeti Klinika, Budapest, Hungary; Prof. Ursula Schmidt-Erfurth, Allgemeines Krankenhaus, Wien, Austria; Prof. Constantin Pournaras, Hôpitaux universitaires de Genéve, Genève, Switzerland; Dr. Joachim W. Wachtlin, Uni-Klinikum Benjamin Franklin, Berlin, Germany; Dr. Zora Dubska, Ocni Klinika 1 LF VFN, Prague 2, Czech Republic; Dr. Francisco Gomez Ulla, Instituto Tecnologico de Oftalmologia, Santiago de Compostela, Spain; Dr. Andrew Chang, Sydney Retina Clinic and Day Surgery, Sydney, Australia; Dr. Ugo Introini, Istituto Scientifico San Raffaele - IRCCS, Milano, Italy; Prof. Johann Roider, Universitaetsklinikum Kiel, Kiel, Germany; Dr. Felix Armada, Hospital Universitario La Paz, Madrid, Spain; Prof. Anita Leys, UZ Gasthuisberg, Leuven, Belgium; Dr. Rufino Silva, Assoc para Investigacao Biomedicae Inovacao em Luz e Imagem, Coimbra, Portugal; Dr. Robyn Guymer, Centre for Eye Research Australia, Melbourne, Australia; Prof. Francesco Bandello, Policlinico Universitario (P.U.D.G.), Università degli Studi, Udine, Italy; Dr. Terho Latvala, Tampere University Hospital, Tampere, Finland; Prof. Suleyman Kaynak, Dokuz Eylul University Medical Faculty, Izmir, Turkey; Prof. JeanMarie, Rakic, C.H.U. Sart-Tilman, Liege, Belgium; Dr. Johan Seland, Stavanger Universitetssykehus, Stavanger, Norway; Dr. Andrea Facsko, DEOEC Szemklinika, Debrecen, Hungary; Dr. Antonio Piñero, Clinica Piñero, Sevilla, Spain; Dr. Robert Bourke, The Eye Center, Southport, Australia; Prof. F. Falcão Reis, HSJ-Hospital De Sao Joao, E.P.E., Porto, Portugal; Prof. Daniel Pauleikhoff, St. Franziskus-Hospital Department of Ophthalmology, Muenster, Germany; Prof. Ruth Axer-Siegel, Rabin Medical Center, Petach-Tikva, Israel; Prof. Ugo Menchini, A.Osp-Univers.CareggiUniversità degli Studi-Policlin Univer, Firenze, Italy; Dr. Jan Studnicka, Ocni Klinika FN, Hradec Kralove, Czech Republic; Prof. Joseph Moisseiev, Sheba Medical Center, Tel - Hashomer, Israel; Prof. Frank G. Holz, Univ.-Klinikum Bonn, Bonn, Germany; Prof. Alfonso Giovannini, AOU Ospedali Riuniti Umberto I-GM Lancisi-G.SalesiUniv.Stud, Ancona, Italy; Dr. Petr Kolar, University Eye Clinic, Brno, Czech Republic; Dr. Michaela Goldstein, Tel-Aviv Sourasky Medical Center (Ichilov), Tel-Aviv, Israel; Mr. C.P. Hoyng, UMC St. Radboud, locatie Oogheelkunde, Nijmegen, Netherlands; Prof. Carlo Sborgia, A.O.Policlinico di Bari - Università degli Studi, Bari, Italy; Prof. KarlUlrich, Bartz-Schmidt, Universitätsklinikum Tübingen, Augenklinik, Tübingen, Germany; Dr. Marcos P. Ávila, Centro Brasileiro de Cirurgia de Olhos, Goiania, Brazil; Prof. Alain Gaudric, Hopital Lariboisière, Paris cedex 10, France; Prof. Albert J. Augustin, Klinikum Karlsruhe, Karlsruhe, Germany; Dr. Malaika Kurz-Levin, Universitätsspital Zürich, Zuerich, Switzerland; Prof. Gisele Soubrane, Centre Hospitalier Intercommunal, Creteil, France; Mr. Jon Gibson, Birmingham and Midlands Eye Centre, United Kingdom; Dr. Clare Bailey, Bristol Eye Hospital, Bristol, United Kingdom; Dr. Jose M. Ruiz Moreno, Instituto Oftalmologico de Alicante (IOA), Alicante, Spain; Prof. Jean-Francois, Korobelnik, Hopital Pellegrin, Bordeaux Cedex, France; Dr. Ilkka Immonen, Helsingin yliopistollinen keskussairaala, HUS, Finland; Dr. Ilkka Immonen, Turun yliopistollinen keskussairaala, Turku, Finland; Prof. Michalis Moschos, General Hospital of Athens G. Gennimatas, Athens, Greece; Assoc. Prof. Periklis Brazitikos, Ahepa University General Hospital of Thessaloniki, Thessaloniki, Greece; Prof. Miltiadis Tsilibaris, Univ. Hospital of Heraklion, Heraklion, Greece; Dr. Jozsef Gyory, Veszprem Megyei Csolnoky Ferenc Korhaz, Veszprem, Hungary; Dr. Anne Odergren, Retinakliniken, klinik 2, Stockholm, Sweden; Assoc. Prof. Birgitta Bauer, Ogonkliniken, Univ sjukhuset Lund, Lund, Sweden; Assoc. Prof. Christina Frennesson, Ögonkliniken, Linköping, Sweden; Dr. Urban Eriksson, Ogonmottagningen Akademiska sjukhuset, Uppsala, Sweden; Mr. Yit-Chuijn Yang, Wolverhampton and Midland Counties Eye Infirmary, Wolverhampton, United Kingdom; Dr. Jan Ernest, Ocni klinika UVN, Praha 6, Czech Republic; Prof. Andrew Lotery, Southampton General Hospital, United Kingdom; Dr. R.O. Schlingemann, Academisch Medisch Centrum Universiteit van Amsterdam, Amsterdam, Netherlands