\documentclass{article}
\usepackage{com.braju.graphicalmodels}

\catcode`\@=11%

\pagestyle{empty}

\begin{document}
\TeXtoEPS

\LARGE
\psset{unit=20mm,arrowscale=1.5,linewidth=1.5pt}
\begin{pspicture}(0,0)(18,10)%\showgrid
  \SpecialCoor

  \rput(1,3){\GM@node[observed=false]{C}} \GM@label[angle=180]{C}{C}
  \rput(3,3){\GM@node[observed=false]{F}} \GM@label[angle=0]{F}{F}
  \rput(2,1){\GM@node[observed=false]{E}} \GM@label[angle=-90]{E}{E}


  \ncline[arrows=->]{C}{F}
  \ncline[arrows=->]{C}{E}
  \ncline[arrows=->]{F}{E}

  \rput(0.8,3){\rput[b](0.25,0.4){Treatment}}
  \rput(3,3){\rput[b](0.25,0.4){Blood Pressure}}
  \rput(1.8,-0.3){\rput[b](0.25,0.4){Recovery}}


  


\end{pspicture}

\endTeXtoEPS
\end{document}