Re: Beta Blockers and Improved Progression-Free Survival in Patients With Advanced HER2 Negative Breast Cancer. Issue 5 (September 2018) - Sørensen, Gitte Vrelits; Cronin-Fenton, Deirdre P.; Sørensen, Henrik Toft; Damkier, Per; Ejlertsen, Bent; Christiansen, Peer M.; Lash, Timothy L.; Ahern, Thomas P.