Dr Arturo Ezquerro: London-based consultant psychiatrist, psychoanalytic-psychotherapist, and group analyst; senior assessor and trainer, Institute of Group Analysis; honorary member International Attachment Network, and World Association of International Studies; former Head NHS Medical Psychotherapy Services for Brent; over a hundred publications in six languages, including Encounters with John Bowlby (Routledge).

Dr María Cañete: consultant psychotherapist, psychiatrist, and group analyst; trained at the Tavistock Clinic; senior trainer, Institute of Group Analysis; former director NHS group psychotherapy programmes, University College, St Charles, and Mile End Hospitals, London; published widely in English, German and Spanish, including Group Analysis throughout the Life Cycle (Routledge).