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This photo taken on April 21, 2016 shows a woman walking past the Baidu booth at the China (ShangHai) International Technology Fair in Shanghai. The head of Chinese search giant Baidu has been summoned by the country's authorities, reports said on May 3, 2016, as the firm faced a barrage of criticism over the death of a student who used it to search for a cancer treatment. / AFP / STR / China OUT (Photo credit should read STR/AFP/Getty Images)

This photo taken on April 21, 2016 shows a woman walking past the Baidu booth at the China (ShangHai) International Technology Fair in Shanghai. The head of Chinese search giant Baidu has been summoned by the country's authorities, reports said on May 3, 2016, as the firm faced a barrage of criticism over the death of a student who used it to search for a cancer treatment. / AFP / STR / China OUT (Photo credit should read STR/AFP/Getty Images)
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