TY - RPRT TI - Esophageal electrocardiography using a balloon-tip electrode. AU - C J Hardebeck AU - C W Abbottsmith PY - 1985 DO - 10.1016/0002-8703(85)90097-3 UR - https://pubmed.ncbi.nlm.nih.gov/4036798/ ID - 4036798 ER -