Siergiejko , Z., Siergiejko , G., Siergiejko , D., Siergiejko , P., Krupa , A. and Świebocka , E. (2014) “Bronchial methacholine challenge – the current state of knowledge”, Alergoprofil, 10(4), pp. 9-15. Available at: https://journalsmededu.pl/index.php/alergoprofil/article/view/819 (Accessed: 3July2024).