The effects of Tween-80 on the integrity of solutions of capsaicin: useful information for performing tussigenic challenges

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Scott E Kopec^*^†, Richard S Irwin^†, Ronald J DeBellis^†, Mark B Bohlke^† and Timothy J Maher^†

Cough 2008, 4:3 doi:10.1186/1745-9974-4-3