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Outcome of, respectively, all samples, early referral and late referral groups: healing (80, 89.9 and 41.5%, p = 0.0001), minor amputation (29.5, 28, 79.5%, p < 0.0001), major amputation (8, 0.6, 36.6%, p = 0.0001), mortality (7.5, 4.4, 19.5%, p = 0.02). ER early referral; LR late referral
