New drug development in the United States from 1963 to 1992.
DiMasi
J A
JA
Center for the Study of Drug Development, Tufts University, Boston, MA 02111.
Seibring
M A
MA
Lasagna
L
L
D015507:Drugs, Investigational; D017387:Investigational New Drug Application; D013997:Time Factors; D014481:United States
D015507:Drugs, Investigational