@article{Sacha2015a,
title = {Gender differences in the interaction between heart rate and its variability - how to use it to improve the prognostic power of heart rate variability},
journal = {Int. J. Card.},
author = {J. Sacha and S. Barabach and G. Statkiewicz-Barabach and K. Sacha and A. Muller and J. Piskorski and P. Barthel and G. Schmidt},
volume = {171},
year = {2014},
pages = {E42}
}