I wanted to share this with you asap.
Two doctors in Japan have written a truly brilliant e-book on this subject. It’s free to download, and they have given permission for that both by posting it at the link below and to me directly.
Get it and read it;
http://cpms.chiba-u.jp/enquete/consent.php
It is very good at making plain sense of the whole story. I think we shall use it as a textbook.