Fascinating Research on Vitamin A From 1925
https://articles.mercola.com/sites/articles/archive/2024/04/18/fascinating-research-on-vitamin-a.aspx?ui=cbb512787282e5b291b755483074a62cd8eb3d6fbdb2e3a43c10c6903cec256b&sd=20130307&cid_source=dnl&cid_medium=email&cid_content=art1HL&cid=20240418&foDate=false&mid=DM1553958&rid=2098627594