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In all, Adele was given 28 units of red blood cells, 20 units of fresh frozen plasma, nine units of cryoprecipitate and eight units of platelets - the biggest transfusion at the hospital since 2000.

Campaigners say haemophiliacs could have been offered an alternative treatment called Cryoprecipitate.

He recommended it would be "circumspect" for children aged under four to have an older, more cumbersome treatment - cryoprecipitate - rather than imported products.

There may also be platelets, or cryoprecipitate, or other parts of blood that have been separated so they can be more useful, more specialised.

These include red blood cells, platelets and cryoprecipitate for clotting disorders, as well as whole blood depleted of white blood cells to transfuse into infants with less-developed immune systems, and fresh frozen plasma for transfusion to replace lost blood.