The quality assurance teams and managers supported the evolution of the breast screening programme locally, and professional quality assurance groups were developed with the relevant associations and royal colleges at a national level. In 1990, a new post of national coordinator of the NHSBSP was established, based at one of the regional heath authori- ties. Mrs Julietta Patnick at the Trent Region in Sheffield was appointed, and she is now the Director of the NHS Cancer Screening Programmes, which includes the NHSBSP. Most breast screening units in England had opened by 1990, with the final few opening in 1992. By 1993, most.
