AU  - Feld RI
TI  - DIagnostic ultrasound
PT  - JOUR
DP  - 2012
TA  - JAMA
pages = {730-731},
VI  - 307
IP  - 7
AID  - 10.1001/jama.2012.162 [doi]
4100  - http://dx.doi.org/10.1001/jama.2012.162
SO  - JAMA February 15, 2012 307(7):730