TY - RPRT TI - Using randomized controlled trial data, the agreement between retrospectively and prospectively collected data comprising the pneumonia severity index was substantial. AU - Drahomir Aujesky AU - Roslyn A Stone AU - D Scott Obrosky AU - Donald M Yealy AU - Thomas E Auble AU - Thomas P Meehan AU - Louis G Graff AU - Jonathan M Fine AU - Michael J Fine PY - 2005 DO - 10.1016/j.jclinepi.2004.08.011 UR - https://pubmed.ncbi.nlm.nih.gov/15862721/ ID - 15862721 ER -