แหล่งที่มา :
http://www.thaihealth.or.th/Content/36842-%E0%B8%99%E0%B9%89%E0%B8%B3%E0%B8%A1%E0%B8%B1%E0%B8%99%20%E0%B9%80%E0%B8%A5%E0%B8%B7%E0%B8%AD%E0%B8%81%E0%B9%83%E0%B8%AB%E0%B9%89%E0%B8%94%E0%B8%B5%E0%B9%84%E0%B8%94%E0%B9%89%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B9%82%E0%B8%A2%E0%B8%8A%E0%B8%99%E0%B9%8C-%E0%B9%84%E0%B8%A1%E0%B9%88%E0%B8%A1%E0%B8%B5%E0%B8%AD%E0%B9%89%E0%B8%A7%E0%B8%99.html