1 London School of Hygiene and Tropical Medicine, WC1E 7HT, London, UK. Electronic address: [email protected].
2 Service Delivery and Safety, WHO, Geneva, Switzerland.
3 London School of Hygiene and Tropical Medicine, WC1E 7HT, London, UK; KEMRI-Wellcome Trust Research Programme, Kilifi, Kenya.
4 Unit for Infection Prevention and Control, Division of Community Health, Faculty of Health Sciences, Stellenbosch University, Cape Town, South Africa.
5 Infection Control Program and WHO Collaborating Centre on Patient Safety, University of Geneva Hospitals and Faculty of Medicine, Geneva, Switzerland.
6 Department of Medical Microbiology, University of Groningen, University Medical Centre, Groningen, Netherlands.