HIGHLIGHTS
- who: Abbas Alibakhshi from the Method We conducted a cross-sectional study between , and , in a tertiary care center in Tehran, the capital of IranThe study protocol was approved by the ethics committee of the Tehran University of Medical Sciences (IR. TUMS.IKHC.REC.1398.04). To determine the sufficient sample size for this study, according to the previous studies and assuming the prevalence of, % for DLN involvement in papillary thyroid carcinomas, confidence interval, %, d=0.05, and z=1.96, and given the yearly number of the cases in our center (, papillary thyroid cancer cases) a . . .
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