Page 327: Author affiliation no. 17 (Michele Cavo) was incorrect. The affiliation should read “17IRCCS Azienda Ospedaliero-Universitaria di Bologna, Istituto di Ematologia “Seràgnoli,” Bologna, Italy; 18Dipartimento di Medicina Specialistica, Diagnostica e Sperimentale, Università di Bologna, Bologna, Italy.” Consequently, affiliations 18 through 48 should be affiliations 19 through 49.