Frei P, Imboden M, Gemperli A, Schmid-Grendemeier P, Bircher A. Sensitisation to Ambrosia in Switzerland: a public health threat on the wait. Swiss Med Wkly [Internet]. 2009 Feb. 7 [cited 2024 Apr. 19];139(0506):70-. Available from: https://smw.ch/index.php/smw/article/view/945