TY  - RPRT
TI  - How useful is on-mountain sonography?
AU  - K Zafren
PY  - 2001
DO  - 10.1580/1080-6032(2001)012[0230:huioms]2.0.co;2
UR  - https://pubmed.ncbi.nlm.nih.gov/11769916/
ID  - 11769916
ER  -