About the Authors

Leena Merdad

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft

Affiliation Department of Dental Public Health, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia

Mohamed M. Ali

Roles Conceptualization, Methodology, Writing – review & editing

alim@who.int

Affiliation Department of Reproductive Health and Research, World Health Organization, Geneva, Switzerland

Competing Interests

MMA is a staff member of the World Health Organization. The authors alone are responsible for the views expressed in this publication, and they do not necessarily represent the decisions, policy or views of the World Health Organization. The country names used do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city of area or of its authorities.