Predominant lifetime occupation and associations with painful and structural knee osteoarthritis: An international participant-level cohort collaboration by Parsons, CM, Gates, LS, Perry, T, Nevitt, M, Felson, D, Sanchez-Santos, MT, Jones, G, Golightly, YM, Allen, KD, Callahan, LF, White, DK, Walker-Bone, K, Cooper, C, Arden, NK