Here are some of the research papers that I mention in today's podcast:
https://www.mdpi.com/2072-6643/13/10/3305
https://www.karger.com/Article/FullText/515058
https://www.sciencedirect.com/science/article/pii/S0735109720356874?via%3Dihub
https://www.bmj.com/content/366/bmj.l4137
https://ebm.bmj.com/content/26/1/3