Here's the linked study to https://gut.bmj.com/content/early/2021/03/08/gutjnl-2020-322670#DC3 https://gut.bmj.com/content/early/2021/03/08/gutjnl-2020-322... i

Here's the linked study to https://gut.bmj.com/content/early/2021/03/08/gutjnl-2020-322670#DC3 https://gut.bmj.com/content/early/2021/03/08/gutjnl-2020-322... its very readable I found (a non specialist) and has more interesting figures and tables.