*Vertices 4
1 "中华普通外科杂志" 0.0 0.0 0.0 x_fact 0.000000 y_fact 30.319149
2 "医学分子生物学杂志" 0.0 0.0 0.0 x_fact 1.595745 y_fact 2.127660
3 "中华神经医学杂志" 0.0 0.0 0.0 x_fact 0.000000 y_fact 27.659574
4 "放射免疫学杂志" 0.0 0.0 0.0 x_fact 0.000000 y_fact 39.893617
*Matrix 
0.000000 0.500000 0.000000 0.000000 
0.500000 0.000000 0.500000 0.500000 
0.000000 0.500000 0.000000 0.000000 
0.000000 0.500000 0.000000 0.000000