Büssing A1, Ostermann T, Lüdtke R, Michalsen A. Effects of yoga interventions on pain and pain-associated disability: a meta-analysis. J Pain. 2012 Jan; 13(1): 1–9. doi: 10.1016/j.jpain.2011.10.001. Epub 2011 Dec 16; John PJ1, Sharma N, Sharma CM, Kankane A. Effectiveness of yoga therapy in the treatment of migraine without aura: a randomized controlled trial. Headache. 2007 May; 47(5): 654—61.
