Mike Sharland a, Celine Pulcini c, b, Stephan Harbarth d, e, Mei Zeng f, Sumanth Gandra g, Shrey Mathur a, Nicola Magrini h 
on behalf of the 21st WHO Expert Committee on Selection and Use of Essential Medicines
a Paediatric Infectious Diseases Research Group, Institute for Infection and Immunity, St George’s, University of London, London, UK
b Department of Infectious Diseases, Centre Hospitalier Régional Universitaire (CHRU) de Nancy, Nancy, France
c EA 4360 APEMAC, University of Lorraine, Nancy, France
d Infection Control Programme, University of Geneva Hospitals, Geneva, Switzerland
e Department of Internal Medicine, Faculty of Medicine, University of Geneva, Geneva, Switzerland
f Department of Infectious Diseases, Children’s Hospital of Fudan University, Shanghai, China
g Centre for Disease Dynamics, Economics & Policy, New Delhi, India
h Department of Essential Medicines and Health Products, World Health Organization, 1211 Geneva 27, Switzerland