![Using randomized controlled trial data, the agreement between retrospectively and prospectively collected data comprising the pneumonia severity index was substantial]()
Using randomized controlled trial data, the agreement between retrospectively and prospectively collected data comprising the pneumonia severity index was substantialDrahomir Aujesky; Roslyn A. Stone; D. Scott Obrosky; Donald M. Yealy; Thomas E. Auble; Thomas P. Meehan; Louis G. Graff; Jonathan M. Fine; Michael J. Fine · 2005