*Vertices 15
1 "AnnNeurol" 0.0 0.0 0.0 x_fact 2.285764 y_fact 2.868069
2 "ArchNeurolChicago" 0.0 0.0 0.0 x_fact 2.327978 y_fact 2.868069
3 "Brain" 0.0 0.0 0.0 x_fact 3.590673 y_fact 4.890616
4 "BrainRes" 0.0 0.0 0.0 x_fact 6.464950 y_fact 9.381441
5 "BritJPharmacol" 0.0 0.0 0.0 x_fact 1.501080 y_fact 3.714832
6 "Cephalalgia" 0.0 0.0 0.0 x_fact 2.309354 y_fact 3.423059
7 "Headache" 0.0 0.0 0.0 x_fact 2.349085 y_fact 3.549701
8 "JNeurophysiol" 0.0 0.0 0.0 x_fact 6.268779 y_fact 12.389809
9 "JNeurosci" 0.0 0.0 0.0 x_fact 8.638971 y_fact 20.530903
10 "JamaJAmMedAssoc" 0.0 0.0 0.0 x_fact 1.879765 y_fact 3.824092
11 "Lancet" 0.0 0.0 0.0 x_fact 2.031238 y_fact 4.924139
12 "Neurology" 0.0 0.0 0.0 x_fact 4.961387 y_fact 8.347198
13 "NewEnglJMed" 0.0 0.0 0.0 x_fact 1.738224 y_fact 4.163045
14 "Pain" 0.0 0.0 0.0 x_fact 1.990266 y_fact 4.412605
15 "Stroke" 0.0 0.0 0.0 x_fact 4.567803 y_fact 10.712423
*Matrix 
0.000000 0.869030 0.850648 0.377174 0.000000 0.365824 0.323414 0.214398 0.292656 0.227173 0.251756 0.881535 0.285518 0.000000 0.507921 
0.869030 0.000000 0.805357 0.000000 0.000000 0.337995 0.324936 0.000000 0.000000 0.000000 0.000000 0.966434 0.213861 0.000000 0.325271 
0.850648 0.805357 0.000000 0.439336 0.000000 0.337125 0.283811 0.302482 0.385703 0.000000 0.000000 0.804446 0.000000 0.205455 0.237630 
0.377174 0.000000 0.439336 0.000000 0.268742 0.000000 0.000000 0.646783 0.783220 0.000000 0.000000 0.000000 0.000000 0.311500 0.219247 
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0.365824 0.337995 0.337125 0.000000 0.000000 0.000000 0.950369 0.000000 0.000000 0.000000 0.000000 0.384213 0.000000 0.243822 0.000000 
0.323414 0.324936 0.283811 0.000000 0.000000 0.950369 0.000000 0.000000 0.000000 0.000000 0.000000 0.371759 0.000000 0.000000 0.000000 
0.214398 0.000000 0.302482 0.646783 0.000000 0.000000 0.000000 0.000000 0.829976 0.000000 0.000000 0.000000 0.000000 0.227178 0.000000 
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0.881535 0.966434 0.804446 0.000000 0.000000 0.384213 0.371759 0.000000 0.000000 0.201530 0.000000 0.000000 0.227464 0.000000 0.418877 
0.285518 0.213861 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.729214 0.631162 0.227464 0.000000 0.000000 0.202253 
0.000000 0.000000 0.205455 0.311500 0.000000 0.243822 0.000000 0.227178 0.245027 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 
0.507921 0.325271 0.237630 0.219247 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.206965 0.418877 0.202253 0.000000 0.000000