PT - JOURNAL ARTICLE AU - P K Henneberger TI - How “clean” is the cleaning profession? AID - 10.1136/oem.2005.020701 DP - 2005 Sep 01 TA - Occupational and Environmental Medicine PG - 586--587 VI - 62 IP - 9 4099 - http://oem.bmj.com/content/62/9/586.short 4100 - http://oem.bmj.com/content/62/9/586.full SO - Occup Environ Med2005 Sep 01; 62