AU  - Kuehn BM
TI  - CLinical trials registry expands
PT  - JOUR
DP  - 2009
TA  - JAMA
pages = {22},
VI  - 302
IP  - 1
AID  - 10.1001/jama.2009.891 [doi]
4100  - http://dx.doi.org/10.1001/jama.2009.891
SO  - JAMA July 1, 2009 302(1):22