Complex sentence: Between 1957 and 1973, Detre established at Yale Medical School a new model of psychiatric care with dramatically reduced hospitalization lengths, in part achieved through innovative approaches to mental and addictive disorders which ultimately brought psychiatry much closer to other domains of medicine.
Split into simpler sentences: Between 1957 and 1973, Detre established at Yale Medical School a new model of psychiatric care, integrating medical treatments and dramatically reducing hospitalization lengths. His innovative approaches to mental and addictive disorders brought psychiatry much closer to other domains of medicine.