This guideline was coordinated by Dr Lisa Rogers under the supervision of Dr Juan Pablo Peña-Rosas, with technical input from Dr Rajiv Bahl, Dr Luz Maria de Regil, Ms Tracey Goodman and Dr Jose Martines. Thanks are due to Dr Regina Kulier and the staff at the Guidelines Review Committee Secretariat for their support throughout the process. Thanks are also due to Dr Davina Ghersi for her technical advice and assistance in the preparation of the technical consultations for this guideline and Mr Issa T. Matta and Mrs Chantal Streijffert Garon from the World Health Organization (WHO) Office of the Legal Counsel for their support in the management of conflicts of interest procedures. Ms Grace Rob and Mrs Paule Pillard from the Micronutrients Unit, Department of Nutrition for Health and Development, provided logistic support.

WHO gratefully acknowledges the technical input of the members of the WHO/United Nations Children's Fund (UNICEF) Steering Committee, the Vitamin A Supplementation Guideline Group and the External Experts and Stakeholders Panel. WHO is also grateful to the Cochrane Editorial Unit for its support in coordinating the update of the systematic reviews used to inform this guideline and the evidence summary of findings.