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Liu, Kao-Hui; Liu, Donald; Chen, Yu-Tsung; Chin, Szu-Ying . (2019). Comparative effectiveness of low-level laser therapy for adult androgenic alopecia: a system review and meta-analysis of randomized controlled trials. Lasers in Medical Science, (), –. doi:10.1007/s10103-019-02723-6 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research