https://www.syu.ac.kr/pharmacy/2008/06/19/%ec%95%bd%ed%95%99%eb%8c%80%ec%83%9d-%ed%8c%8c%ed%8a%b8%ed%83%80%ec%9e%84-%ea%b7%bc%eb%ac%b4%ec%9e%90%eb%a5%bc-%eb%aa%a8%ec%a7%91%ed%95%98%ea%b3%a0%ec%9e%90-%ed%95%a9%eb%8b%88%eb%8b%a4/