@article{article3672,
  title = {Normal limits of ECG measurements related to atrial activity using a modified limb lead system},
  author = {W.  Macfarlane, P.},
  journal = {The Anatolian Journal of Cardiology},
  year = {2015},
  volume = {15},
  pages = {7-7},
  doi = {10.5152/akd.2014.14170}
}