Are there any denominations opposed to organ transplant donation or receipt?

Organ donation sounds like it would be a controversial topic, but it doesn't seem to be. I'm aware that Jehovah's Witnesses won't accept blood transfusions, but, as blood is normally flushed out of the organs, other kinds of transplants *are* acceptable. Are there in fact *any* denominations that oppose either donating or receiving organ transplants, whether from a living or deceased donor?