Christer Sandahl is a licensed psychologist, licensed psychotherapist, and professor of Social and Behavioural Science at the Medical Management Centre, Karolinska Institutet, Stockholm, Sweden. Hjördis Nilsson Ahlin is an occupational therapist, a licensed psychotherapist, a group analyst, and a supervisor of psychiatric groups. Catharina Asklin-Westerdahl is a licensed clinical psychologist, licensed psychotherapist, group analyst, and team and organizational consultant. Mats Björling, BSc, is a licensed psychotherapist, group psychotherapist, and supervisor in private practice. Anna Malmquist Saracino, BSW, is a licensed psychotherapist, group analyst, and psychotherapy supervisor. Lena Wennlund, BSW, is a licensed psychotherapist, group analyst, and psychotherapy supervisor. Ulf Åkerström is a licensed psychologist, licensed psychotherapist, and specialist in clinical psychology. Ann Örhammar is a registered nurse, licensed psychotherapist, group analyst, and psychotherapy supervisor.