Heart rate variability-based prediction of early cardiotoxicity in breast-cancer patients treated with anthracyclines and trastuzumab.By Santiago Luna-Alcala, Adrián Espejel-Guzmán, Claudia Lerma, Paula Leon, Enrique C. Guerra, Jose Rodrigo Espinosa Fernández, Pavel Martinez-Dominguez, Javier Serrano-Roman, Aldo Cabello-Ganem, Alexis D. Aparicio-Ortiz, Candace Keirns, Abel Lerma, Maria Jose Santa Ana-Bayona and Nilda Espinola-Zavaleta