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Gawełko, Jan, Marek Cierpiał-Wolan, Andrzej Kawecki, Konrad Wilk, Danuta B. Pięciak-Kotlarz, ja Damian Sikorski. "Comparative Analysis of the Incidence of Head and Neck Cancer in South-eastern Poland and in Poland in the Years 1990–2012." Contemp Oncol (Pozn) 2017.

Gawełko, Jan, et al. "Comparative Analysis of the Incidence of Head and Neck Cancer in South-eastern Poland and in Poland in the Years 1990–2012." Contemp Oncol (Pozn) 2017.