By Matt Slater, Press Association
Published: 00:50 GMT, 17 January 2019 | Updated: 00:52 GMT, 17 January 2019
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Premier League footballers are taking part in a British research project that could revolutionise how sport diagnoses and treats concussions.
Led by Professor Tony Belli, researchers have spent the last two years gathering saliva and urine samples from English Premiership and Championship rugby union players to fine-tune a 'breakthrough' in using bio-markers to spot concussions and work out when those affected can return to play.
Previously, these bio-markers could only be identified in lab tests on blood but Belli's team at the University of Birmingham and University Hospitals Birmingham NHS Foundation Trust have worked out how to find them in saliva, which should enable doctors to make more accurate and quick assessments at pitch-side.
Premier League players will take part in a project that could help concussion treatment
Professor Belli said: 'The 'Birmingham Concussion Test' is a really big breakthrough and it has been developed in Britain.
'Sports around the