Niederwieser, D., Baldomero, H., Bazuaye, N., Bupp, C., Chaudhri, N., Corbacioglu, S., Elhaddad, A., Frutos, C., Galeano, S., Hamad, N., Hamidieh, A. A., Hashmi, S., Ho, A., Horowitz, M. M., Iida, M., Jaimovich, G., Karduss, A., Kodera, Y., Kröger, N., Péffault de Latour, R., Lee, J. W., Martínez-Rolón, J., Pasquini, M. C., Passweg, J., Paulson, K., Seber, A., Snowden, J. A., Srivastava, A., Szer, J., Weisdorf, D., Worel, N., Koh, M. B., Aljurf, M., Greinix, H., Atsuta, Y. and Saber, W. (2021) “One and a half million hematopoietic stem cell transplants: continuous and differential improvement in worldwide access with the use of non-identical family donors”, Haematologica. Pavia, Italy. doi: 10.3324/haematol.2021.279189.