An open-label randomized controlled trial of low molecular weight heparin compared to heparin and coumadin for the treatment of venous thromboembolic events in children: the REVIVE trial. - Massicotte,P.; Julian,J.A.; Gent,M.; Shields,K.; Marzinotto,V.; Szechtman,B.; Andrew,M. (Thrombosis Research, 2003)