J Am Acad Orthop Surg. 2018 Nov 1;26(21):773-778. doi: 10.5435/JAAOS-D-17-00230.
PMID:30180092
Comparison of transcutaneous electrical nerve stimulation (TENS) and functional electrical stimulation (FES) for spasticity in spinal cord injury - A pilot randomized cross-over trial.