New drug development in the United States from 1963 to 1990.
DiMasi
J A
JA
Center for the Study of Drug Development, Tufts University, Boston, MA 02111.
Bryant
N R
NR
Lasagna
L
L
D004345:Drug Industry / Q000639:trends*; D015507:Drugs, Investigational; D006801:Humans; D013678:Technology, Pharmaceutical / Q000639:trends*; D014481:United States; D014486:United States Food and Drug Administration
D015507:Drugs, Investigational