Evaluation of the 6-minute walking test as a smartphone app-based self-measurement of objective functional impairment in patients with lumbar degenerative disc disease

Maldaner N, Sosnova M, Zeitlberger A, Ziga M, Gautschi O, Regli L, Weyerbrock A, Stienen M, International 6WT Study Group. Evaluation of the 6-minute walking test as a smartphone app-based self-measurement of objective functional impairment in patients with lumbar degenerative disc disease. J Neurosurg Spine 2020:1-10.