| OHP | hydroxyprogesterone; hydroxyproline; occupational health plan; Oregon Health Plan; oxygen under high... |
|---|---|
| OHR | occupational health research; Office of Health Research |
| PHC | personal health costs; posthospital care; premolar hypodontia, hyperhidrosis, [premature] canities [... |
| PHN | paroxysmal noctural hemoglobinuria; passive Heymann nephritis; postherpetic neuralgia; public health... |
| PHS | Physicians' Health Study; pooled human serum; posthypnotic suggestion; Public Health Service |