Sublingual swallow or spit?

Cite this paper

@article{Passalacqua2001SublingualSO, title={Sublingual swallow or spit?}, author={Giovanni Passalacqua and Gaetano Villa and Vania Altrinetti and Paolo Falagiani and Giorgio Walter Canonica and Guglielmo Mariani and Marcello Bagnasco}, journal={Allergy}, year={2001}, volume={56 6}, pages={578} }