The study isn’t from Oxford. It’s from a team of Chinese scientists (likely in China) who used a large dataset collected in the UK.
The study is published in The Journal of Clinical Endocrinology & Metabolism, which the Oxford Academic collects and reproduces for their academic press.
PLEASE revive Inbox!
I’ve subscribed to Shortwave to help bundle and manage my emails, but it’s not quite as clean as Inbox was.