] Least we think that the asu and the ashipu merely muttered charms and poisoned their patients with bultus, let us now look at 3 contributions of Mesopotamian medicine still in use today.    Our source here is the world's oldest remaining medical text, a clay cuneiform tablet dating from between 2158 to 2008 B.C.  This document, in describing treatments for diseases, prescribes first washing the wound or ill person, then applying plasters, and, finally, the use of bandages.