AU  - Katz MH
TI  - HOw can we know so little about physician referrals?
PT  - JOUR
DP  - 2012
TA  - Archives of Internal Medicine
pages = {100},
VI  - 172
IP  - 2
AID  - 10.1001/archinternmed.2011.1290 [doi]
4100  - http://dx.doi.org/10.1001/archinternmed.2011.1290
SO  - Archives of Internal Medicine January 23, 2012 172(2):100