“…In terms of the control group, sham techniques were the most commonly used control, 26,27,47–49,51,61,62,65,69,70 followed by manual contact, 46,50,52,57–60,63,66,71 other forms of OMT, 54–56 detuned ultrasound, 64,67,72 usual care, 53 or no control group 68 …”