50 Hz magnetic field affects heart rate variability - an experimental studyKoppel, Tarmo; Vilcane, Inese; Ahonen, Mikko2018 EMF-Med 1st World Conference on Biomedical Applications of Electromagnetic Fields (EMF-Med), 10-13 Sept. 20182018 / p. 91-92 https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=8526072