Fürniss, Tilman ; Furniss, Tilman ; Furniss, Tilman ; Furniss, Tilman ; Müller, Jörg M. ; Achtergarde, Sandra ; Winkel, Sandra ; Wessing, Ida ; Averbeck-Holocher, Marlies ; Holocher, Marlies Averbeck- ; Averbeck, Marlies ; Holocher, Marlies Averbeck- ; Averbeck, Marlies ; Holocher, Marlies Averbeck- ; Averbeck, Marlies ; Holocher, Marlies Averbeck- ; Averbeck, Marlies ; Postert, Christian: Implementing psychiatric day treatment for infants, toddlers, preschoolers and their families: a study from a clinical and organizational perspective