Authors: Ariane Batscheider; Sylwia Zakrzewska; Joachim Heinrich; Christina M Teuner; Petra Menn; Carl Peter Bauer; Ute Hoffmann; Sibylle Koletzko; Irina Lehmann; Olf Herbarth; Andrea von Berg; Dietrich Berdel; Ursula Krämer; Beate Schaaf; H-Erich Wichmann; Reiner Leidl Journal: BMC Health Serv Res Date: 2012-10-02 Impact factor: 2.655