CIA believes COVID-19 likely originated from a lab, but has low confidence in its finding
The finding, released Saturday on the orders of President Donald Trump's pick to lead the agency, is not the result of new ...
BMJ23 小时
Understanding injury mechanisms: a key component of preventing injuries in sport
Oslo Sports Trauma Research Center, Norwegian University of Sport & Physical Education, Oslo, Norway Correspondence to: Professor Bahr Oslo Sports Trauma Research Center, Norwegian University of Sport ...