Kiciński, Paweł, Monika Szymańska, Jarosław Niedziałek, Beata Lis, and Andrzej Prystupa. 2016. “Osborn Wave in ECG in Elderly Patient With so-Called Urban Hypothermia”. Journal of Education, Health and Sport 6 (8):206-9. https://apcz.umk.pl/JEHS/article/view/3748.