Faustino EV, Hanson S, Spinella PC, Tucci M, O'Brien SH, Nunez AR, Yung M, Truemper E, Qin L, Li S, Marohn K, Randolph AG. A multinational study of thromboprophylaxis practice in critically ill children. Crit Care Med. 2014 May; 42(5):1232-40.