https://www.syu.ac.kr/pharmacy/2008/09/01/9%ec%9b%9421%ec%9d%bc-%ed%94%bc%eb%b6%80%ec%9e%90%ea%b0%80%eb%a9%b4%ec%97%ad%ec%a7%88%ed%99%98%ea%b3%bc-%ec%b2%b4%ed%97%98%ec%82%ac%eb%a1%80%ec%96%bc%ea%b5%b4%eb%b3%b4%ea%b3%a0%eb%b3%91%ec%9e%a1/