Impact of food advertising on food purchases by students in primary and secondary schools in south-eastern Poland– Corrigendum. Issue 5 (13th February 2017) - Mazur, A; Telega, G; Kotowicz, A; Małek, H; Jarochowicz, S; Gierczak, B; Mazurkiewicz, M; Pop, T; Zajkiewicz, K; Dobrucki, M; Mazur, D