Application of the IASP Grading System to Identify Underlying Pain Mechanisms in Patients With Knee Osteoarthritis: A Prospective Cohort Study. - Vervullens S; Meert L; Meeus M; Heusdens CHW; Verdonk P; Foubert A; Abatih E; Durnez L; Verbrugghe J; Smeets RJEM (The Clinical journal of pain, 2024)