Singh A, Geller HI, Alexander KM, Padera RF, Mitchell RN, Dorbala S, Castillo JJ, Falk RH. True, true unrelated? Coexistence of Waldenström macroglobulinemia and cardiac transthyretin amyloidosis. Haematologica 2018; 103(8):e374-e376; https://doi.org/10.3324/haematol.2018.190405.