Affiliations

• ¹ Maternal, Newborn, Child and Adolescent Health and Ageing Department, World Health Organization, Geneva, Switzerland. Electronic address: gutholdr@who.int.
• ² Division of Data, Analytics, Planning and Monitoring, Data and Analytics Section, UNICEF, New York, New York; Department of Global Public Health, Karolinska Institutet, Stockholm, Sweden.
• ³ Adolescent Health Unit, Institute of Child Health, College of Medicine, University of Ibadan, Ibadan, Nigeria.
• ⁴ Global Adolescent Health Group, Burnet Institute, Melbourne, Victoria, Australia.
• ⁵ Maternal, Newborn, Child and Adolescent Health and Ageing Department, World Health Organization, Geneva, Switzerland.
• ⁶ Tabriz Health Services Management Research Center, Tabriz University of Medical Sciences, Tabriz, Iran.
• ⁷ Department of Mental Health and Substance Use, World Health Organization, Geneva, Switzerland.
• ⁸ UN Major Group for Children and Youth, London, United Kingdom.
• ⁹ Independent Consultant, Tannay, Switzerland.
• ¹⁰ MRC/CSO Social and Public Health Sciences Unit, University of Glasgow, Glasgow, United Kingdom.
• ¹¹ Technical Division, Sexual and Reproductive Health Branch, UNFPA, Geneva, Switzerland.
• ¹² UNDP/UNFPA/UNICEF/WHO/World Bank Special Programme of Research, Development and Research Training in Human Reproduction (HRP), Department of Sexual and Reproductive Health and Research, World Health Organization, Geneva, Switzerland.
• ¹³ Division of Data, Analytics, Planning and Monitoring, Data and Analytics Section, UNICEF, New York, New York.