TY  - RPRT
TI  - Left supradiaphragmatic semilunar shadow.
AU  - F B Landis
AU  - S K Das
PY  - 1971
DO  - 10.1378/chest.59.3.320
UR  - https://pubmed.ncbi.nlm.nih.gov/5544972/
ID  - 5544972
ER  -