Comparing effects of kyphoplasty, vertebroplasty, and non-surgical management in a systematic review of randomized and non-randomized controlled studies. - Papanastassiou ID; Phillips FM; Van Meirhaeghe J; Berenson JR; Andersson GB; Chung G; Small BJ; Aghayev K; Vrionis FD; Papanastassiou, Ioannis D; Phillips, Frank M; Van Meirhaeghe, Jan; et al. (European Spine Journal, 2012)