Each year, analysts at Clarivate Analytics mine millions of citations in the Web of Science, an online subscription-based scientific citation indexing service, to identify top-tier researchers in physiology or medicine, physics, chemistry and economicsKaposi's sarcoma-ass国际龙8官方网站ociated herpesvirus is the infectious cause of this neoplasmHere, we present some of the most striking images around the world this past weekChildren cool off themselves at a wading pool in Toronto, Canada, on Sept 24, 2017The vice-premier said China is willing to work with the US to prepare for President Trump's visit to China to ensure it is a great success国际龙8官方网站Visiting Vice-Premier Liu Yandong, right, speaks with Jared Kushner, senior White House adviser, center, and Ivanka Trump, left, daughter of US President Donald Trump also serving as an adviser, in Washington DC, on Sept 27, 2017