*Vertices 4
1 "AmJPsychiat" 0.0 0.0 0.0 x_fact 4.425466 y_fact 29.891304
2 "BHistMed" 0.0 0.0 0.0 x_fact 3.571429 y_fact 4.658385
3 "JamaJAmMedAssoc" 0.0 0.0 0.0 x_fact 3.222050 y_fact 64.013975
4 "MedHist" 0.0 0.0 0.0 x_fact 0.543478 y_fact 1.436335
*Matrix 
0.000000 0.773049 0.221878 0.000000 
0.773049 0.000000 0.355007 0.598222 
0.221878 0.355007 0.000000 0.000000 
0.000000 0.598222 0.000000 0.000000