Timing is everything: Towards classification criteria for early-stage symptomatic knee osteoarthritis. - Mahmoudian A; King LK; Liew JW; Wang Q; Appleton CT; Englund M; Haugen IK; Lohmander LS; Runhaar J; Turkiewicz A; Neogi T; Hawker GA (Osteoarthritis and cartilage, 2024)