MACHOWIEC, Piotr Artur, MAKSYMOWICZ, Marcela and NIEMIRSKI, Dominik. Analysis of the safety of using e-cigarettes during pregnancy. The literature review. Journal of Education, Health and Sport. Online. 27 September 2020. Vol. 10, no. 9, pp. 793-802. [Accessed 30 June 2024]. DOI 10.12775/JEHS.2020.10.09.096.