@misc{Olejarnik_Ilona._Frequency,
 author={Olejarnik, Ilona. and Borzęcki, Grzegorz. and Kowalska, Magdalena. and Borzęcki, Andrzej.},
 howpublished={online},
 publisher={Uniwersytet Marii Curie-Skłodowskiej},
 publisher={Akademia Medyczna (Lublin)},
 language={eng},
 type={artykuł},
 title={Frequency of occurrence of obesity and body mass deficitsamong children of Lublin grammar-schools},
 keywords={medycyna, nauki medyczne},
}