Implementing peer support work in mental health care in Germany: The methodological framework of the collaborative, participatory, mixed‐methods study (ImpPeer‐Psy5) oleh Sebastian vonPeter, Ute Maria Kraemer, Lauren Cubellis, Georgia Fehler, Guillermo Ruiz‐Pérez, Daniela Schmidt, Jenny Ziegenhagen, Madeleine Kuesel, Susanne Ackers, Candelaria Mahlke, Lena Nugent, Imke Heuer