TY - JOUR KW - Checked KW - editorial AU - Herbert Rob BT - Manual Therapy C1 - 1.931 C2 - 1.923 CN - N J2 - Man Ther LA - eng LB - MSjournal M1 - 1 PY - 2007 SP - 1 EP - 2. ST - Man. Ther.Man. Ther. T2 - Manual Therapy TI - Dealing with heterogeneity in clinical trials [Invited editorial] VL - 12 ER -