Redirecting you to http://www.ncbi.nlm.nih.gov/pubmed?term=A%20Randomized%20Trial%20Comparing%20Acupuncture%2C%20Simulated%20Acupuncture%2C%20and%20Usual%20Care%20for%20Chronic%20Low%20Back%20Pain%20Arch%20Intern%20Med.%202009%3B169(9)%3A858-866.