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Liu X, Shahid R, Patel AB, McDonald T, Bertazzon S, Waters N, Seidel JE, Marshall DA.Liu X, et al. Among authors: marshall da.BMC Public Health. 2020 Oct 15;20(1):1551. doi: 10.1186/s12889-020-09599-0.BMC Public Health. 2020.PMID: 33059639Free PMC article.
King LK, Waugh EJ, Jones CA, Bohm E, Dunbar M, Woodhouse L, Noseworthy T, Marshall DA, Hawker GA; BEST-Knee Study Team.King LK, et al. Among authors: marshall da.BMJ Open. 2021 Jun 18;11(6):e047061. doi: 10.1136/bmjopen-2020-047061.BMJ Open. 2021.PMID: 34145017Free PMC article.