Getting fit for hip and knee replacement: a protocol for the Fit-Joints pilot randomized controlled trial of a multi-modal intervention in frail patients with osteoarthritis oleh Ahmed M. Negm, Courtney C. Kennedy, George Ioannidis, Olga Gajic-Veljanoski, Justin Lee, Lehana Thabane, Jonathan D. Adachi, Sharon Marr, Arthur Lau, Stephanie Atkinson, Danielle Petruccelli, Justin DeBeer, Mitchell Winemaker, Victoria Avram, Benjamin Deheshi, Dale Williams, David Armstrong, Barry Lumb, Akbar Panju, Julie Richardson, Alexandra Papaioannou