%0 Journal Article %T A Framework for Understanding “Evidence” in Prevention Research and Programs %A Kellam, Sheppard %A Langevin, Doris %J Prevention Science %V 4 %N 3 %P 137-153 %@ 1389-4986 %D 2004-09-28 %I Kluwer Academic Publishers-Plenum Publishers %~ DeepDyve