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Blair, Cheríe S.; Garner, Omai B.; Pedone, Bettina; Elias, Sam; Comulada, W. Scott; Landovitz, Raphael J.; Shafer, William M. . (2019). Factors associated with repeat rectal Neisseria gonorrhoeae and Chlamydia trachomatis screening following inconclusive nucleic acid amplification testing: A potential missed opportunity for screening. PLOS ONE, 14(12), e0226413–. doi:10.1371/journal.pone.0226413 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research