*Vertices 5
1 "Headache" 0.0 0.0 0.0 x_fact 2.195639 y_fact 16.838280
2 "JNeurolSci" 0.0 0.0 0.0 x_fact 3.119322 y_fact 9.585100
3 "MedClinNAm" 0.0 0.0 0.0 x_fact 0.121139 y_fact 0.499697
4 "Neurology" 0.0 0.0 0.0 x_fact 30.754088 y_fact 72.047244
5 "SeminNeurol" 0.0 0.0 0.0 x_fact 0.878256 y_fact 1.029679
*Matrix 
0.000000 0.000000 0.000000 0.221024 0.491487 
0.000000 0.000000 0.000000 0.715491 0.729191 
0.000000 0.000000 0.000000 0.000000 0.523314 
0.221024 0.715491 0.000000 0.000000 0.787362 
0.491487 0.729191 0.523314 0.787362 0.000000