*Vertices 4
1 "BmcPublicHealth" 0.0 0.0 0.0 x_fact 0.510964 y_fact 3.001916
2 "EpidemiolInfect" 0.0 0.0 0.0 x_fact 3.427720 y_fact 7.323824
3 "EurJEpidemiol" 0.0 0.0 0.0 x_fact 1.852246 y_fact 3.236108
4 "Vaccine" 0.0 0.0 0.0 x_fact 2.341920 y_fact 86.438152
*Matrix 
0.000000 0.000000 0.455501 0.000000 
0.000000 0.000000 0.530061 0.607461 
0.455501 0.530061 0.000000 0.363989 
0.000000 0.607461 0.363989 0.000000