1. Hayden JA, van Tulder MW, Malmivaara A, Koes BW. Exercise therapy for treatment of nonspecific low back pain. Cochrane Database Syst Rev. 2000; CD000335.
2. Saper RB, Eiseberg DM, Davis RB, Culpepper L, Phillips RS. Prevalence and patterns of adult yoga use in the United States: results of a national survey. Altern Ther Health Med 2004;10:44–9.
3. Jacobs BP, Mehling W, Goldberg HA, Eppel E, Acree M, Lasater JH et al. Feasibility of conducting a clinical trial on Hatha yoga for chronic low back pain: methodological lessons. Altern Ther Health Med 2004;10:80–3.
4. Galantino ML, Bzdewka TM, Eissler-Russo JL, Holbrook ML, Mogck EP, Geigle P et al. The impact of modified Hatha yoga on chronic low back pain: a pilot study. Altern Ther Health Med 2004;10:56–9.
5. Williams K, Steinberg L, Petronis J. Therapeutic application of Iyengar yoga for healing chronic low back pain. Int J Yoga Ther 2003;13:55–67.