s of Presentations: ......................................................................................................49 Session A ..............................................................................................................................49 Session B ..............................................................................................................................

1. Edwards R. The problem of tobacco smoking. BMJ. 2004;328(7433):217-219. doi:10.1136/bmj.328.7433.217 CrossRef Pubmed Central Google Scholar

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Małgorzata Stańczyk, Marcin Tkaczyk Received: 30.03.2015 Accepted: 29.04.2015 Published: 30.06.2015 © Pediatr Med Rodz 2015, 11 (2), p. 215–219 Małgorzata Stańczyk, Marcin Tkaczyk