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Wong, Melissa S.; Spiegel, Brennan M.R.; Gregory, Kimberly D. . (2020). Virtual Reality Reduces Pain in Laboring Women: A Randomized Controlled Trial. American Journal of Perinatology, (), s-0040-1708851–. doi:10.1055/s-0040-1708851 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research