The advent of force-feeding in the new century in the context of conflict and protest made it necessary to clarify and revise the whole concept of artificial feeding and force-feeding.
There is no morally compelling reason to distinguish a doctor from a tank driver on the battlefield except for the fact that both sides agree to protect medical personnel.
Some commentators say comparative trials of FDA-approved drugs are overburdened by current Common Rule regulations and that researchers should not be required to obtain explicit consent for participation in the most innocuous of these trials.