Carretto E, Barbarini D, Locatelli F, Giraldi E, Pellegrini N, Perversi L, Grossi P, Marone P, Bonetti F. Vancomycin-resistant Enterococcus faecium infection in three children given allogeneic hematopoietic stem cell transplantation: clinical and microbiologic features. Haematologica 2000; 85(11):1158-1164.