“…The remaining nine studies were excluded because the authors did not respond to our request to provide the relevant data (Benkelfat et al, 1989; Fals-Stewart, Marks, & Schafer, 1993; Goodman, Kozak, Liebowitz, & White, 1996; Goodman et al, 1989; Hiss, Foa, & Kozak, 1994; Katz, DeVeaugh-Geiss, & Landau, 1990; Leonard et al, 1991; March et al, 1998; Stein, Hollander, Mullen, DeCaria, & Liebowitz, 1992). …”