Premature babies are vulnerable and often require intensive care to survive. This might include blood transfusion to treat anaemia. In November 2011, Robin Whyte and Haresh Kirpalani published their Cochrane Review of the use of different hemoglobin thresholds for triggering a blood transfusion in very low birth weight babies. Robin, who works at the Department of Neonatal Pediatrics in Halifax Nova Scotia in Canada tells us more.