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Bischoff-Ferrari, HA; Dawson-Hughes, B; Staehelin, HB; Orav, JE; Stuck, AE; Theiler, R; Wong, JB; Egli, A; Kiel, DP; Henschkowski, J (2009). Fall prevention with supplemental and active forms of vitamin D: a meta-analysis of randomised controlled trials. BMJ, 339(oct01 1), b3692-b3692. London: BMJ Publishing Group 10.1136/bmj.b3692
