TY - JOUR
AU - Macedo L.
AU - Herbert Rob
AU - McAuley J.
AU - Kamper S.
AU - Maher C.
BT - European Spine Journal
CN - Y
LA - eng
LB - MSjournal
M1 - 7
PY - 2008
SP - 889
EP - 904.
ST - Eur Spine J
T2 - European Spine Journal
TI - Imperfect placebos are common in low back pain trials. A systematic review of the literature
VL - 17 
ER -