| H-H | head-to head |
|---|---|
| H-I | Hypoxic-ischemic |
| H-JEB | Herlitz junctional epidermolysis bullosa |
| h-MBP | Human myelin basic protein |
| H-P | hypothalamic-pituitary |
| H-P-A | Hypothalamic-pituitary-adrenocortical |
| H-POA | hypothalamus-preoptic area |
| H-PTH | hyperparathyroidism |
| h-PTH 1-34 | human parathyroid hormone |
| H-RS | Hodgkin and Reed Sternberg |