| GIB | gastrointestinal bleeding |
|---|---|
| GTB | gastrointestinal tract bleeding |
| IMB | intermenstrual bleeding |
| OB | obese [mouse]; obese, obesity; objective benefit; obliterative bronchiolitis; obstetrics, obstetrici... |
| PCB | paracervical block; polychlorinated biphenyl; portacaval bypass; postcoital bleeding; procarbazine |