Edited by Teena Kunjumen, Mollent Okech, Pamela McQuide, Tomas Zapata and Khassoum Diallo.
Publication of this supplement was supported by the World Health Organization (WHO). Articles have undergone the journal's standard peer review process for supplements. Supplement Editor declarations: Teena Kunjumen serves as technical officer in Data Evidence and Knowledge Management (DEK) unit in the Health Workforce Department (HWF), WHO-HQ. Mollent Okech serves as technical officer in Universal Health Coverage/Health Systems, Life course and Healthier Populations in WHO, Papua New Guinea. Pamela McQuide serves as Health Workforce Development expert in IntraHealth International, USA. Tomas Zapata serves as Regional Advisor, Health Workforce and Service Delivery Unit in WHO-EURO. Khassoum Diallo serves as the Unit Head of the Data Evidence and Knowledge Management (DEK) unit in the Health Workforce Department (HWF), WHO-HQ.
The views expressed in this supplement are those of the authors alone and do not represent the views of WHO.