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Lipner, Shari R.. (2018). Rethinking Biotin Therapy for Hair, Nail, and Skin Disorders. Journal of the American Academy of Dermatology, (), S0190962218302044–. doi:10.1016/j.jaad.2018.02.018 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research