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Needles used according to the study period.
| Period | P value | ||
|---|---|---|---|
| First half | Second half | ||
| (N = 45 sessions in 44 patients) | (N = 42 sessions in 39 patients) | ||
| (Oct 2016-June 2017) | (July 2017-March 2018) | ||
| Franseen needle | 19 | 32 | |
| Conventional FNA needle | 26 | 10 | 0.001 |
FNA: fine needle aspiration.
