The head of Chinese search giant Baidu has been summoned by the country's authorities, reports said Tuesday, as the firm faced a barrage of criticism over the death of a student who used it to search for a cancer treatment. Wei Zexi, a 21-year-old college student, had already been diagnosed as having a terminal soft tissue disease when his family found an experimental immunotherapy treatment via a Baidu search. Wei accused the hospital of exaggerating the treatment's efficacy and accused Baidu of ranking medical information search results by the amount paid by advertisers, denouncing it as "evil" and warning other cancer patients "not to be cheated".
