Worldwide inequality in access to full text scientific articles: the example of ophthalmology oleh Christophe Boudry, Patricio Alvarez-Muñoz, Ricardo Arencibia-Jorge, Didier Ayena, Niels J. Brouwer, Zia Chaudhuri, Brenda Chawner, Emilienne Epee, Khalil Erraïs, Akbar Fotouhi, Almutez M. Gharaibeh, Dina H. Hassanein, Martina C. Herwig-Carl, Katherine Howard, Dieudonne Kaimbo Wa Kaimbo, Patricia-Ann Laughrea, Fernando A. Lopez, Juan D. Machin-Mastromatteo, Fernando K. Malerbi, Papa Amadou Ndiaye, Nina A. Noor, Josmel Pacheco-Mendoza, Vasilios P. Papastefanou, Mufarriq Shah, Carol L. Shields, Ya Xing Wang, Vasily Yartsev, Frederic Mouriaux