The operation-related complications rate in OT group was 20%, which was remarkable higher than that in PDT(7.5%) (P<0.05).
PDT组的并发症发生率（7.5%）明显低于OT组的（20%），差异有统计学意义（P<0.05）。
The operation-related complications rate in OT group was 20%, which was remarkable higher than that in PDT(7.5%) (P<0.05).
PDT组的并发症发生率（7.5%）明显低于OT组的（20%），差异有统计学意义（P<0.05）。
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