Steurer-Stey, Claudia, Erich W. Russi, and Johann Steurer. “Complementary and Alternative Medicine in Asthma: Do They Work?”. Swiss Medical Weekly 132, no. 2526 (June 29, 2002): 338–344. Accessed November 24, 2024. https://smw.ch/index.php/smw/article/view/186.