*Vertices 2
1 "中华流行病学杂志" 0.0 0.0 0.0 x_fact 2.127660 y_fact 59.574468
2 "中国艾滋病性病" 0.0 0.0 0.0 x_fact 14.893617 y_fact 40.425532
*Matrix 
0.000000 0.535496 
0.535496 0.000000