1. Dickerman RD, Pertusi R, Smith GH. The upper range of lumbar spine bone mineral density? An examination of the current world record holder in the squat lift. Int J Sports Med. 2000;21(7):469–70.
2. Wieland DC, Krywka C, Mick E, Willumeit-Römer R, Bader R, Kluess D. Investigation of the inverse piezoelectric effect of trabecular bone on a micrometer length scale using synchrotron radiation. Acta Biomater. 2015;25:339–46.
3. Kang H, Hou Z, Qin QH. Experimental study of time response of bending deformation of bone cantilevers in an electric field. J Mech Behav Biomed Mater. 2018;77:192–8. Epub 2017 Sep 13.
4. Goodwin TJ. An optimization of pulsed electromagnetic fields study: Orthofix, Inc.; Orthofix basic science summit, Philadelphia, PA, 7–8 December 2006.
5. WHO Study Group. Assessment of fracture risk and its application to screening for post-menopausal osteoporosis. WHO technical report series 843. Geneva: WHO; 1994.