A Bristol Heart Children Action Group was set up, and the group embarked on discussions with the hospital to find out how much human material had been kept from children who had died after cardiac surgery. In February 1999, the Action Group members called a press conference so that the public could learn about the retained hearts. In the meantime, serious doubts about the quality of paediatric cardiac surgery at Bristol led to the formation of a Public Inquiry, chaired by Ian Kennedy. In September 1999 a medical witness to the Inquiry drew attention to the large number of hearts held at the Alder Hey Children's Hospital in Liverpool.