1. Barnes PM, Bloom B, Nahin RL (2008) Complementary and alternative medicine use among adults and children: United States, 2007. Natl Health Stat Report: 1–23.
2. A Systematic Literature Review of Complementary and Alternative Medicine Prevalence in EU;S Eardley;Forsch Komplementmed,2012
3. Pain management for women in labour: an overview of systematic reviews;L Jones;Cochrane Database Syst Rev,2012
4. Acupuncture for acute low back pain: a systematic review;JH Lee;Clin J Pain,2013
5. Smith CA, Zhu X, He L, Song J (2011) Acupuncture for primary dysmenorrhoea. Cochrane Database Syst Rev: CD007854.