The Guinness World Record for ‘Most authors on a single peer-reviewed academic paper’ is now held by the Birmingham and Edinburgh University after 15,025 scientists around the globe contributed to the major research into the impact of Coronavirus on surgical patients.
source https://www.jagranjosh.com/current-affairs/india-uk-covid19-study-sets-guinness-world-record-for-worlds-largest-scientific-collaboration-1630049642-1