Students (from left to right) Andrew Dias, Jeremy Schaefer, Andrew Bremer and Jeremy Glynn work together to create a low-cost spirometer in the Engineering Centers Building at the University of Wisconsin-Madison on March 11, 2009. The device is used to measure lung function and could be used in low-income countries to diagnose and manage respiratory disease. The work is part of a Biomedical Engineering Design class project designed by postdoctoral fellow David Van Sickle.