ADRB1 and heart failure: 12 Lanfear Lanfear DE DE Peterson Peterson EL EL Zeld Zeld N N Wells Wells K K Sabbah Sabbah HN HN Williams Williams K K Beta blocker survival benefit in heart failure is associated with ADRB1 Ser49Gly genotype Beta blocker survival benefit in heart failure is associated with ADRB1 Ser49Gly genotype J Card Fail J Card Fail 2015 2015 21 21 8 8 S50 S50