Survey of transfusion practices in preterm infants in Europe por Scrivens, A, Riebel, NJ, Heeger, L, Stanworth, S, Lopriore, E, New, HV, Dame, C, Fijnvandraat, K, Deschmann, E, Aguar, M, Braekke, K, Cardona, FS, Cools, F, Farrugia, R, Ghirardello, S, Lozar, J, Matasova, K, Muehlbacher, T, Sankilampi, U, Soares, H, Szabo, M, Szczapa, T, Zaharie, G, Roehr, C, Fustolo-Gunnink, S