Did Shipman kill more than 215 patients?
The Shipman Inquiry is to re-examine whether Shipman may have killed patients while working as a junior doctor before he became a GP.
The inquiry's first report found he killed 215 patients, and concluded his killing spree did not start until he began practising as a GP in Todmorden, West Yorkshire, in 1975.
But a health professional who worked with the serial killer at Pontefract General Infirmary has produced fresh evidence, following Shipman's suicide in January this year. Shipman worked at the hospital as a trainee doctor between 1970 and 1974.
Dame Janet Smith, chair of the inquiry, said it was necessary to re-examine that period in light of the new evidence.