I think it is done for the first time in human history, unless you are thinking about Nazi's children camps in Belarus where they were drawing blood from childr

I think it is done for the first time in human history, unless you are thinking about Nazi's children camps in Belarus where they were drawing blood from children to be used for their soldiers (Krasny Bereg- http://mynativebelarus.blogspot.com/2012/04/krasny-bereg-childrens-khatyn.html?_sm_au_=iVVJQt4QT20FDVR6 http://mynativebelarus.blogspot.com/2012/04/krasny-bereg-chi...). I'm afraid the dystopian future is here, not in a sense of using certain groups of people for organ harvesting but as in growing humans in labs for that purpose. The Chinese government will most likely prefer the "cleaner" option.