แหล่งที่มา :
http://women.thaiza.com/%E0%B9%80%E0%B8%A3%E0%B8%B4%E0%B9%88%E0%B8%A1%E0%B8%A7%E0%B8%B1%E0%B8%99%E0%B8%99%E0%B8%B5%E0%B9%89-%E0%B8%87%E0%B9%88%E0%B8%B2%E0%B8%A2%E0%B9%86-%E0%B8%81%E0%B8%B1%E0%B8%9A%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%94%E0%B8%B9%E0%B9%81%E0%B8%A5%E0%B9%84%E0%B8%95/310686/
http://www.pharmacy.mahidol.ac.th/th/knowledge/article/244/%E0%B8%A7%E0%B8%B4%E0%B8%98%E0%B8%B5%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%94%E0%B8%B9%E0%B9%81%E0%B8%A5%E0%B9%84%E0%B8%95/