https://heho.com.tw/archives/82610
参考资料
A pilot, open labelled, randomised controlled trial of hypertonic saline nasal irrigation and gargling for the common cold
https://www.nature.com/articles/s41598-018-37703-3
Cost-effectiveness of gargling for the prevention of upper respiratory tract infections
https://pubmed.ncbi.nlm.nih.gov/19087312/