@proceedings{17725, author = {Macedo L. and Herbert Rob and Kamper S. and Maher C.}, title = {Using placebo controls in low back pain research. Part 1: Acupuncture, manual therapy and exercise}, year = {2006}, journal = {Amsterdam International Forum VIII. Primary care research on low back pain}, pages = {56}, address = {Amsterdam, the Netherlands}, language = {eng}, }