This is a "connection" page, showing publications co-authored by Richard Stephen Irwin and Scott Kopec.
Kopec SE, DeBellis RJ, Irwin RS. Chemical analysis of freshly prepared and stored capsaicin solutions: implications for tussigenic challenges. Pulm Pharmacol Ther. 2002; 15(6):529-34.
Kopec SE, Irwin RS, DeBellis RJ, Bohlke MB, Maher TJ. The effects of Tween-80 on the integrity of solutions of capsaicin: useful information for performing tussigenic challenges. Cough. 2008 May 27; 4:3.