| PHI | passive hemagglutination inhibition; past history of illness; phosphohexose isomerase; physiological... |
|---|---|
| Phx | past history; pharynx |
| PMH | past medical history; posteromedial hypothalamus |
| PPH | past pertinent history; persistent pulmonary hypertension; phosphopyruvate hydratase; postpartum hem... |
| PRH | past relevant history; prolactin releasing hormone |