TY - JOUR AU - Shcrertz, RJ; Belani, A; Kramer, BS TI - Impact of air filtration on nosocomial aspergillus infections JO - Am J Med VL - 83 PY - 1987 DO - 10.1016/0002-9343(87)90902-8 L3 - PubMed-ID: 3314494 SP - 709 EP - 18. N1 - et al. ER -