RT Journal Article SR Electronic(1) A1 Ayliffe, G. A. J.YR 1987 T1 Hospital hygiene JF Journal of Medical Microbiology, VO 24 IS 1 SP 92 OP 92 DO https://doi.org/10.1099/00222615-24-1-92a PB Microbiology Society, SN 1473-5644, AB , UL https://www.microbiologyresearch.org/content/journal/jmm/10.1099/00222615-24-1-92a