1 Infection Prevention and Control Global Unit, Service Delivery and Safety, World Health Organization, Geneva 27, Switzerland. Electronic address: [email protected].
2 Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland.
3 Infection Control Programme and World Health Organization Collaborating Centre on Patient Safety (Infection Control and Improving Practices), University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland.
4 Institute of Hygiene and Environmental Medicine, Charité-University Medicine, Berlin, Germany.
5 AIC Kijabe Hospital, Kijabe, Kenya.
6 Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, OH 45267-0558, USA; OASIS Global, Cincinnati, OH, USA.