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Forest plot of MR study using (A)> primary genetic instruments with total OA. MR, Mendelian randomization; OR, odds ratio; CI, confidence interval; IVW, inverse variance weighted; OA, Osteoarthritis. Forest plot of MR study using (B) secondary genetic instruments with total OA. MR, Mendelian randomization; OR, odds ratio; CI, confidence interval; IVW, inverse variance weighted; OA, Osteoarthritis.
