Original article
A retrospective multicenter analysis
Dtsch Arztebl Int 2014; 111: 649-57. DOI: 10.3238/arztebl.2014.0649
Hrivatakis, G;
Astfalk, W;
Schmidt, A;
Hartwig, A;
Kugler, T;
Heim, T;
Clausner, A;
Frunder, A;
Weber, H;
Loff, S;
Fuchs, J;
Ellerkamp, V