Reuters  —  Chinese swimmers took more anti-doping tests this year than swimmers from any other country ahead of the World Aquatics Championships in Singapore this month, the Aquatics Integrity Unit said in a report . From January 1, Chinese swimmers had an average of 8.8 anti-doping tests versus those from the US who were tested 4.1 times and those from Britain who were tested 2.2 times, the report showed. Swimmers competing as neutrals – mainly those with Russian nationality – were tested 8.2