"Activity-Based Therapy for Recovery of Walking in Individuals with Chronic Spinal Cord Injury: Results from a Randomized Clinical Trial."

http://www.ncbi.nlm.nih.gov/pubmed/25102384

"Activity-Based Therapy for Recovery of Walking in Chronic Spinal Cord Injury: Results from a Secondary Analysis to Determine Responsiveness to Therapy."

http://www.ncbi.nlm.nih.gov/pubmed/25102385