PMID 25251335. ↑ Hannemann, P. F. W.; Mommers, E. H. H.; Schots, J. P. M.; Brink, P. R. G.; Poeze, M. (August 2014). "The effects of low-intensity pulsed ultrasound and pulsed electromagnetic fields bone growth stimulation in acute fractures: a systematic review and meta-analysis of randomized controlled trials".