AU  - Califf RM
TI  - CLinical research sites—the underappreciated component of the clinical research system
PT  - JOUR
DP  - 2009
TA  - JAMA
pages = {2025-2027},
VI  - 302
IP  - 18
AID  - 10.1001/jama.2009.1655 [doi]
4100  - http://dx.doi.org/10.1001/jama.2009.1655
SO  - JAMA November 11, 2009 302(18):2025