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Guarnieri, Renzo; Di Nardo, Dario; Gaimari, Gianfranco; Miccoli, Gabriele; Testarelli, Luca . (2018). Short vs. Standard Laser-Microgrooved Implants Supporting Single and Splinted Crowns: A Prospective Study with 3 Years Follow-Up. Journal of Prosthodontics, (), –. doi:10.1111/jopr.12959 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research