Acupuncture for acute non-specific low back pain: a randomised, controlled, multicentre intervention study in general practice-the Acuback study.
Trygve SkonnordHolgeir SkjeieMette BrekkeAtle KlovningMargreth GrotleEline AasIbrahimu MdalaArne FetveitPublished in: BMJ open (2020)
NCT01439412.