Here's a blurb on "Presumed Consent" for organ donation. It seems UK not only debated on the subject of boosting organ donation thru "opt-out" and "bereavement support", it actually was put to a vote:

http://news.bbc.co.uk/1/hi/uk_politics/3845365.stm

This to me really demonstrate that not only is this issue debatable in China, it is debatable elsewhere too. To see more here's the Google search:

http://www.google.com/search?q=UK+vote+presumed+consent