| HO | hand orthosis; heterotopic ossification; high oxygen; hip orthosis; history of; Holt-Oram [syndrome]... |
|---|---|
| OALL | ossification of anterior longitudinal ligament |
| OPLL | ossification of posterior longitudinal ligament |
| CDSC | Communicable Diseases Surveillance Centre [London] |
| ECETOC | European Centre for Ecotoxicity and Toxicology of Chemicals |