TY - RPRT TI - Direct comparison of a contractility and activity pacemaker sensor during treadmill exercise testing. AU - Ayten Erol-Yilmaz AU - Raymond Tukkie AU - Job De Boo AU - Tim Schrama AU - Arthur Wilde PY - 2004 DO - 10.1111/j.1540-8159.2004.00666.x UR - https://pubmed.ncbi.nlm.nih.gov/15546303/ ID - 15546303 ER -