| CPUE | chest pain of unknown etiology |
|---|---|
| CU | cardiac unit; casein unit; cause unknown or undetermined; chymotrypsin unit; clinical unit; color un... |
| CUP | carcinoma unknown primary |
| DU | decubitus ulcer; density unknown; deoxyuridine; dermal ulcer; diagnosis undetermined; diazouracil; d... |
| EU | Ehrlich unit; elementary unit; emergency unit; endotoxin unit; entropy unit; enzyme unit; esterase u... |