Impact of covid-19 pandemic on physical activity, pain, mood, and sleep in adults with knee osteoarthritis. (September 2021) - Rose, M.J.; LaValley, M.P.; Jafarzadeh, S.; Costello, K.E.; Shah, N.; Lee, S.; Rabasa, G.; Borrelli, B.; Messier, S.P.; Neogi, T.; Kumar, D.