| QIN | quality improvement network |
|---|---|
| SPN | senior plan network; sialophorin; solitary pulmonary nodule; supplemental parental nutrition; sympat... |
| TEN | total enteral nutrition; total excretory nitrogen; toxic epidermal necrolysis; transepidermal neuros... |
| TOXICON | Toxicology Information Conversational On-Line Network |
| TOXNET | Toxicology Network (NLM) [data bank] |