 This was part of a series of mergers of London medical schools in the early 1980s, foreshadowing a larger series in the late 1990s, which brought all the institutes together into five large schools.In 1997, as part of the second wave, CXWMS merged with Imperial College, London (and its medical department, St Mary's Hospital Medical School), the National Heart and Lung Institute, and the Royal Postgraduate Medical School, to form Imperial College School of Medicine.Chelsea and Westminster Hospital maintains strong ties with Imperial College School of Medicine and is a teaching hospital for students undergoing clinical attachments in various specialties.