| FIFO | first in, first out |
|---|---|
| LCL | Levinthal-Coles-Lillie [body]; lower confidence limit; lower control limit; lymphoblastoid cell line... |
| LLSB | left lower scapular border; left lower sternal border |
| LRI | lamina rara interna; lower respiratory [tract] illness; lower respiratory [tract] infection; lymphoc... |
| LRTI | lower respiratory tract illness; lower respiratory tract infection |