https://www.syu.ac.kr/pharmacy/2011/01/24/%eb%8f%99%ea%b5%ad%eb%8c%80%ed%95%99%ea%b5%90%ec%9d%bc%ec%82%b0%eb%b3%91%ec%9b%90-%ec%a0%95%ea%b7%9c%ec%a7%81%ec%95%bd%ec%82%ac-%eb%aa%a8%ec%a7%91%ec%95%88%eb%82%b4-2/