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1 "AnnNeurol" 0.0 0.0 0.0 x_fact 2.469372 y_fact 3.286688
2 "BritMedJ" 0.0 0.0 0.0 x_fact 3.886168 y_fact 8.025025
3 "CerebrovascDis" 0.0 0.0 0.0 x_fact 5.076416 y_fact 5.749089
4 "Circulation" 0.0 0.0 0.0 x_fact 5.092100 y_fact 13.066588
5 "CochraneDbSystRev" 0.0 0.0 0.0 x_fact 6.501926 y_fact 9.047976
6 "IntJStroke" 0.0 0.0 0.0 x_fact 2.194030 y_fact 2.237597
7 "JCerebrBloodFMet" 0.0 0.0 0.0 x_fact 1.976195 y_fact 3.297144
8 "JNeurolNeurosurPs" 0.0 0.0 0.0 x_fact 3.269261 y_fact 3.933221
9 "JNeurosurg" 0.0 0.0 0.0 x_fact 2.075528 y_fact 5.011937
10 "Lancet" 0.0 0.0 0.0 x_fact 3.880940 y_fact 7.941376
11 "LancetNeurol" 0.0 0.0 0.0 x_fact 4.356691 y_fact 4.757507
12 "Neurology" 0.0 0.0 0.0 x_fact 5.578307 y_fact 10.330586
13 "NewEnglJMed" 0.0 0.0 0.0 x_fact 2.425806 y_fact 5.829253
14 "Stroke" 0.0 0.0 0.0 x_fact 8.861510 y_fact 17.486015
*Matrix 
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