Secret Hospital

In a secret hospital beneath Taravangian's palace, there are people who are intentionally being drained of their own blood to produce the effect of their last words in an effort to supplement the Diagram.
Only those who are near death are brought there, but none are allowed to leave if they recover. This is why their blood is slowly drained in order to induce the prophetic words.
Taravangian tells Dalinar that if he gives up walking, he fears his deterioration will increase. Further, that he's seen similar things happen to people in his hospitals.
Kaladin tells Lirin that there are those who are discovering some remarkable things at the hospitals in Kharbranth. That they've found a way to infect people with a weak, easily overcome version of a disease which leaves them immune for life to more harsh variants.
Later, Taravangian tells Mrall that they have protected Kharbranth. That they've fulfilled the Diagram. That it's time to disband, to dismantle the secret hospitals.
==References==
Category:Structures