TY - RPRT TI - Variations in normal electrocardiographic response to treadmill testing. AU - V F Froelicher AU - R Wolthuis AU - J Fischer AU - G Uhl PY - 1981 DO - 10.1016/0002-9149(81)90229-0 UR - https://pubmed.ncbi.nlm.nih.gov/7223663/ ID - 7223663 ER -