Jacques Lacroix is professor, Department of Pediatrics, Université de Montréal. His main topics of research are transfusion medicine, multiple organ dysfunction syndrome and pediatric trauma. He wrote 260 papers in peer-reviewed journals (h-index = 60, i10-index = 137, 16361 citations), 95 chapters, a textbook in pediatric critical care medicine, section editions in 2 other textbooks, and 294 abstracts, posters and free papers. He gave 307 invited lectures across the world, including 158 outside Canada. He published 2 landmark randomized controlled trials, the TRIPICU study (N Engl J Med 2007;356:1609-19) and the ABLE study (N Engl J Med 2015;372:110-8), and he conducted the ABC-PICU trials (NCT01977547) with Marisa Tucci and Phil Spinella (under review). Many international organizations have sought his expertise (American NIH, British NIH, Société de réanimation de langue française, Society of Critical Care Medicine, etc.). Many guidelines resulted from these scientific activities.