| CSI | calculus surface index; cancer serum index; cavernous sinus infiltration; cervical spine injury; che... |
|---|---|
| CSIN | Chemical Substances Information Network |
| ECR | effectiveness-cost ratio; electrocardiographic response; emergency care research; emergency chemical... |
| EINECS | European Inventory of Existing Commercial Chemical Substances |
| ESCA | electron spectroscopy for chemical analysis |