I'm a researcher from Bison medical in Korea. And my speciality is public health especially for biostatistics which mainfiled is clinical trial for medical device such like laser systems. I have been international standard committee members of the Ministry of Industry Technology and Standards from 2007 as elderly people with disabilities assistive devices of the International Organization for Standardization in ISO / TC 173 , and I have been work for medical devices of the International Organization for Standardization IEC / TC 62 members of Korea. During the work of international standardization in cooperation with the other countries, I cooperated in international standardization with Japan, China and other countries.