I can´t give you a net site where you find information about it, but maybe you search for the internet site of different universitys in japan and ask there for it here´s the one of the
Tokyo University and here is
Osaka University^^ I hope that´ll help you
When do you think people die?
When they are shot through the heart by the bullet of a pistol?
No.
When they are ravaged by an incurable disease?
No.
When they drink a soup made from a poisonous mushroom?
No!
It's when... they are forgotten.
~Dr. Hiluluk - One Piece