Gawełko, J., Cierpiał-Wolan, M., Podgórska-Bednarz, J. and Kawecki, A. (2017) “Morbidity trend of lip cancer in Podkarpacie and in Poland in the years 1963–2013”, European Journal of Clinical and Experimental Medicine, 15(1), pp. 32–38. doi: 10.15584/ejcem.2017.1.5.