Brehm, Merel-Anne, Suzan Verduijn, Jurgen Bon, Nicoline Bredt, and Frans Nollet. “Comparison of Two 6-Minute Walk Tests to Assess Walking Capacity in Polio Survivors”. Journal of Rehabilitation Medicine 49, no. 9 (August 29, 2017): 732–737. Accessed November 24, 2024. https://medicaljournalssweden.se/jrm/article/view/10428.