I was looking for the 5 definers of sex that lord Winston talked about in his short interview on GBnews (as posted on here a few days ago).
I didnt find the answers about what the other 3 where he didnt get a chance to mention, but I stumbled upon this interesting article I felt needed to be shared, I am not sure if this is one of the things used in the book Invisible Women but it does contain some of the same data.
stanmed.stanford.edu/2017spring/how-sex-and-gender-which-are-not-the-same-thing-influence-our-health.html