title: Bion's "containing" and Winnicott's "holding" in the context of the group matrix.
mesh_terms: D005260:Female; D006803:Human Development; D006801:Humans; D007223:Infant; D009034:Mother-Child Relations; D009769:Object Attachment; D011574:Psychoanalytic Theory; D011575:Psychoanalytic Therapy; D011615:Psychotherapy, Group