That was a good book about something I have never known before, if this happens before I was born. I did rate it somewhat lower than I would have, as midway through the book the author there’s into a “ say no to drugs“ type of pontification and appears to base his research on things that were assumed back in the 70s, which have been disproven in 2019 which is when this book is released. That is an irresponsible journalism.