Affiliations

• ¹ Department of Economic, Financial and Actuarial Mathematics, University of Barcelona, 08034 Barcelona, Spain; Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. Electronic address: villavicencio@ub.edu.
• ² Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.
• ³ Faculty of Medicine, University of Alcalá, Alcalá de Henares, Spain.
• ⁴ Division of Data, Analytics, Planning and Monitoring, UNICEF, New York, NY, USA.
• ⁵ Department of Maternal, Newborn, Child and Adolescent Health and Ageing, World Health Organization, Geneva, Switzerland.
• ⁶ Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA; Department of Population, Family, and Reproductive Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA.