We read with great interest the article by Liao et al.⁽¹⁾ revealing postdiagnosis aspirin was associated with improved biliary tract cancer (BTC)-specific mortality of various subtypes. We agree the author collected data from the national, multicenter Cancer Registration Database and conducted a great cohort study. However, we would like to highlight some key points.

中文翻译：

---

致编辑的信：诊断后阿司匹林的使用与胆道癌减少有关吗？

我们饶有兴趣地阅读了 Liao 等人的文章。⁽¹⁾揭示诊断后阿司匹林与各种亚型胆道癌 (BTC) 特异性死亡率的改善有关。我们同意作者从国家多中心癌症登记数据库收集数据并进行了一项伟大的队列研究。但是，我们想强调一些关键点。