TY - RPRT TI - Bidirectional tachycardia in a child. A study using His bundle electrography. AU - D S Reid AU - M Tynan AU - L Braidwood AU - G R Fitzgerald PY - 1975 DO - 10.1136/hrt.37.3.339 UR - https://pubmed.ncbi.nlm.nih.gov/1138739/ ID - 1138739 ER -