Novel anthracycline-spacer-β-glucuronide, -β-glucoside, and -β-galactoside prodrugs for application in selective chemotherapyRuben G.G. Leenders; Eric W.P. Damen; Edward J.A. Bijsterveld; Hans W. Scheeren; Pieter H.J. Houba; Ida H. van der Meulen-Muileman; Epie Boven; Hidde J. Haisma · 1999