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Ishibashi, Tomoyuki; Iwama, Yasuaki; Nakashima, Hiroshi; Ikeda, Toshihide; Emi, Kazuyuki . (2020). Foveal crack sign: an optical coherence tomography sign preceding macular hole after vitrectomy for rhegmatogenous retinal detachment. American Journal of Ophthalmology, (), S0002939420302701–. doi:10.1016/j.ajo.2020.05.030 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research