Kim Shi-nyeo, left, mother of Han Hye-gyeong, 39, right, assists her daughter to sit down on a wheelchair as they approach to a subway stop on the way to Samsung Electronic's Seocho Headquarters on March 6, 2017 in Seoul, South Korea. Han worked at Samsung's Giheung LCD factory from 1995 and 2001, and was diagnosed as brain tumor in 2005. She had undergone a surgery and a series of chemotherapy, but became both mentally and physically disabled and could not walk on her own. (Photo by Jean Chung/Getty Images)
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