Poncumhak, Puttipong, Pattra Wattanapun, Jeamjit Sangsuwan, and Sugalya Amatachaya. 2012. “Validity of the Sit-to-Stand Test for the Requirement of Walking Devices in Patients With Spinal Cord Injury”. Archives of Allied Health Sciences 24 (3). Khon Kaen, Thailand:339-47. https://he01.tci-thaijo.org/index.php/ams/article/view/66295.