References:

1. Occupational Safety and Health Branch. Labour Department. Guidance Notes on Ventilation and Maintenance of Ventilation Systems. 2005.

2. American Society of Heating, Refrigerating and Air-conditioning Engineers, Inc. ANSI/ASHARE Standard 62-2001. Ventilation for Acceptable Indoor Air Quality. 2004.

3. Occupational Safety and Health Branch. Labour Department. A Simple Guide to Health Risk Assessment. Office Environment Series OE 4/2004. Ventilation. 2004.

4. Electrical & Mechanical Services Department. Code of Practice  for Water-cooled Air Conditioning Systems. Part 2: Operation and Maintenance of Cooling Towers. 2006.

5. Barrie. Laundry hygiene and handling of contaminated linen. In: G. A. J. Ayliffe.,
   1. P. Fraise., A. M. Geddes., & K. Mitchell (Eds), Control of Hospital Infection. A Practical Handbook (4th ed.). London: Arnold. 2000. (pp239-343)

6. Maurer, I. M. Hospital Hygiene. London: Edward Arnold.1985.

7. Centers for Disease Control and Prevention. (2000). Laundry in Health Care Setting. Retieved November 15, 2005 from http://www.cdc.gov/ncidod/dhqp/bp_laundry.html

8. Bradley, B. Physical and Chemical Disinfection In: G. A. J. Ayliffe., A. P. Fraise.,
   1. M. Geddes., & K. Mitchell (Eds), Control of Hospital Infection. A Practical Handbook (4th ed.). London: Arnold. 2000. (pp75)

9. World Health Organization-Western Pacific Region. Practical Guidelines for Infection Control in Health Care Facilities.(2003) Retrieved February 21, 2005,                              from http://www.wpro.who.int/sars/docs/practicalguidelines/default.asp

10. NHS Executive. Hospital Laundry Arrangements for Used and Infected Linen. (1995)    Retrieved   March      1,     2005,       from http://www.dh.gov.uk/PublicationsAndStatistics/LettersAndCirculars/HealthServiceGuidelines/HealthServiceGuidelinesArticle/fs/en?CONTENT_ID=4017865&chk=5MeXDx