| COHN | Certified Occupational Health Nurse |
|---|---|
| FF | degree of fineness of abrasive particles; fat-free; father factor; fecal frequency; fertility factor... |
| CK-MB | Creatine Kinase MB Fraction |
| EF study | Ejection-Fraction study |
| FiO2 | Fraction of Inspired Oxygen; 흡입 산소 농도 |