M.V. OZEROV Children’s Municipal Hospital with prenatal center, Nizhnekamsk  Contact details: Ozerov M.V. ― doctor of functional diagnostics, children’s cardiologist Address: 45 Mendeleyev Str, Nizhnekamsk, Russian Federation, 423571, tel. (8555) 36-33-67, e-mail: ozerov-62@mail.ru In the present work, an attempt was made to analyze the age-related features of an ECG based on the data obtained during […]