TY - GEN AU - Seitz,P A TI - Heart block in children SN - 0003-2999 PY - 1993///0503 KW - Abdomen KW - surgery KW - Child KW - Heart Block KW - classification KW - Humans N1 - Publication Type: Comment; Letter UR - https://doi.org/10.1213/00000539-199304000-00052 ER -