More Groups
Fewer Groups
More People
Fewer People
Khokhar, S.; Mironov, S.; Seshan, V. E.; Stover, D. E.; Khirbat, R.; Feinstein, M. B. Chest (2010)
Feinstein, M. B.; Mokhtari, M.; Ferreiro, R.; Stover, D. E.; Jakubowski, A. Chest (2001)