트레티노인에 관한 7가지 사항 을 모른다면 곤란할꺼에요
http://rylanoeno927.iamarrows.com/isoteuletinoin-yeogsa-eseo-gajang-widaehan-3gaji-sungan
https://docs.google.com/spreadsheets/d/1kS9x39aACgWp5KZqcCdwBjsiGipCvDnjC_-n9jzjyko/edit#gid=1736914086
https://docs.google.com/spreadsheets/d/1kS9x39aACgWp5KZqcCdwBjsiGipCvDnjC_-n9jzjyko/edit#gid=1736914086