TY  - RPRT
TI  - Ultrasound in developing world.
AU  - P F Hoyer
AU  - M Weber
PY  - 1997
DO  - 10.1016/s0140-6736(05)62498-1
UR  - https://pubmed.ncbi.nlm.nih.gov/9357439/
ID  - 9357439
ER  -