Geometrical accuracy evaluation of an affordable 3D printing technology for spine physical models. Peter Endre Eltes, Laszlo Kiss, Marton Bartos, Zoltan Magor Gyorgy, Tibor Csakany, Ferenc Bereczki, Vivien Lesko, Maria Puhl, Peter Pal Varga, Aron Lazary.Journal of Clinical Neuroscience, Volume 72, February 2020, Pages 438-446.