| ER | efficiency ratio; epigastric region; ejection rate; electroresection; emergency room; endoplasmic re... |
|---|---|
| PER | peak ejection rate; periodogram; protein efficiency ratio |
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| L/S | lactase/sucrase [ratio]; lecithin/ sphingomyelin [ratio]; lipid/saccharide [ratio]; longitudinal sec... |
| MAP | malignant atrophic papulosis; mandibular angle plane; maturation-activated protein; maximal aerobic ... |