Retinol binding protein 4 (RBP4) concentration identifies V122I transthyretin cardiac amyloidosis. (16th March 2017) - Arvanitis, Marios; Simon, Steven; Chan, Gloria; Fine, Denise; Beardsley, Paula; LaValley, Michael; Jacobson, Daniel; Koch, Clarissa; Berk, John L.; Connors, Lawreen H.; Ruberg, Frederick L.