The Maudsley model of anorexia nervosa treatment for adolescents and young adults (MANTRa): a study protocol for a multi-center cohort study oleh Tanja Wittek, Stefanie Truttmann, Michael Zeiler, Julia Philipp, Ellen Auer-Welsbach, Doris Koubek, Susanne Ohmann, Sonja Werneck-Rohrer, Petra Sackl-Pammer, Gabriele Schöfbeck, Dunja Mairhofer, Leonie Kahlenberg, Ulrike Schmidt, Andreas F. K. Karwautz, Gudrun Wagner