TY - JOUR AU - Staiger, C AU - Giannetti, BM AU - Tschaikin, M DO - doi:10.1302/1358-992X.95BSUPP_4.SBPR2011-027 UR - https://doi.org/10.1302/1358-992X.95BSUPP_4.SBPR2011-027 TI - TOPICAL COMFREY ROOT EXTRACT IN THE TREATMENT OF ACUTE UPPER OR LOWER BACK PAIN: RESULTS OF A DOUBLE-BLIND, RANDOMISED, PLACEBO-CONTROLLED, MULTICENTRE TRIAL T2 - Orthopaedic Proceedings VL - 95-B IS - SUPP_4 PY - 2013 SP - 27 EP - 27 ER -