Martha Mills was 13 years old when she died in hospital two years ago, after failures by doctors to spot and treat her sepsis.

Her parents are calling for hospitals to implement 'Martha's Rule', where patients and their families would be given the right to an urgent second opinion, if they feel their concerns are not being taken seriously by medical staff.

Today's Mishal Husain speaks to Martha's mother Merope Mills.

(Photo: Martha Mills, Credit: Merope Mills)