Catalina Bronstein is a training and supervising analyst of the British Psychoanalytical Society. She is a former president of the British Psychoanalytical Society. She is a child and adolescent and adult psychoanalyst and works at the Brent Adolescent Centre in London and in private practice. Bronstein is also Visiting Professor at the Psychoanalysis Unit, University College London.Christian Seulin, MD, is a training and supervising psychoanalyst of the Paris Psychoanalytical Society (SPP) and a member of the International Psychoanalytical Association. He is former secretary of the Executive Council of the Training Commission of the SPP and former president of the Lyon group of the SPP. He is living and practising in Lyon, France. He was editor as a member of the Publications Committee of the IPA between 2009 and 2017.