Complex sentence: Dr S.H. Foulkes, a psychoanalyst and psychiatrist, was the founder, with others, of group analysis in Britain, a group approach developed out of Foulkes's treatment of war victims in Northfield Hospital, Birmingham.
Split into simpler sentences: Dr S.H. Foulkes, a psychoanalyst and psychiatrist, was the founder, with others, of group analysis in Britain. A group approach developed out of Foulkes's treatment of war victims in Northfield Hospital, Birmingham.