| SSD | shaded surface display; single saturating dose; Social Security disability; source-skin distance; so... |
|---|---|
| ORS | olfactory reference syndrome; oral rehydration solution; oral surgery, oral surgeon; Orthopaedic Res... |
| OHI | Occupational Health Institute; operative hypertension indicator; oral hygiene index; Oral Hygiene In... |
| MHP | hemiplegic migraine; maternal health program; maternal health program; medical center health plan; 1... |
| CSO | claims services only; common source outbreak; craniostenosis; craniosynostosis; ostium of coronary s... |