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As many trials are placebo-controlled, it is not always immediately apparent whether a participant received a study treatment or a placebo, according to the company.
As of July 2017, there were 751 million internet users in China and internet penetration rate reached 54.3 percent, 1.1 percentage points higher than for the same time in 2016, data from China Internet Watch showed.
As of Sunday, the website has received more than 4.2 billion visits, and the number is still rising rapidly, it said.
As of March this year, about 12,000 students from Hong Kong and Macao go to the university, accounting for half of the country's total, reported by Yangcheng Evening News on Sunday.
As of the end of May, about 20 international cities in 16 countries and regions, and 81 domestic cities have air links to Urumqi.
