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. 2020 Sep 22;20:212. doi: 10.1186/s12893-020-00865-x

Table 3.

symptoms duration before surgery

Duration of symptoms (months) Group A Group B P-value
(mean ± SD) 9.33 ± 3.61 9 ± 3.94 0.8 (NS)
Range 5–17 5–18