TY - RPRT TI - Letter: ABO blood types in congenital heart-disease. AU - V Siskind AU - O P Heinonen AU - S Shapiro AU - D Slone PY - 1975 DO - 10.1016/s0140-6736(75)92154-6 UR - https://pubmed.ncbi.nlm.nih.gov/53397/ ID - 53397 ER -