Late onset<unk>  is nearly completely prevented by early supplementation of<unk> <unk>  which is typically given to newborns shortly after birth. The most effective method of administration is by intramuscular injection shortly after birth but it can be given orally in three doses over the first month. It is not possible to reliably distinguish which infants are at high risk of late<unk>  and the potential consequences are high, as such most national health organisations recommend routine supplementation in the first 24 hours of life. Controversy Controversy arose in the early 1990s regarding routine supplementation, when two studies suggested a relationship between parenteral administration of<unk> <unk>  and childhood cancer. However, both studies have been discredited on the basis of poor methodology and small sample sizes, and a review of the evidence published in 2000 by Ross and Davies found no link between the two.
Vitamin K deficiency bleeding
Contaminated haemophilia blood products
Venom-induced consumption coagulopathy
Cold autoimmune hemolytic anemia
Quebec platelet disorder
Acquired haemophilia
Postcoital bleeding
Thrombophilia