The age of blood in pediatric intensive care units (ABC PICU): study protocol for a randomized controlled trial oleh Marisa Tucci, Jacques Lacroix, Dean Fergusson, Allan Doctor, Paul Hébert, Robert A. Berg, Jaime Caro, Cassandra D. Josephson, Stéphane Leteurtre, Kusum Menon, Kenneth Schechtman, Marie E. Steiner, Alexis F. Turgeon, Lucy Clayton, Tina Bockelmann, Philip C. Spinella, for the Canadian Critical Care Trials Group, the Pediatric Critical Care Blood Research Network (BloodNet), the Pediatric Acute Lung Injury and Sepsis Investigators (PALISI) Network