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. (2019). Correction: An observational study comparing HPV prevalence and type distribution between HPV-vaccinated and -unvaccinated girls after introduction of school-based HPV vaccination in Norway. PLOS ONE, 14(12), e0226706–. doi:10.1371/journal.pone.0226706 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research