1. World Health Organization.Number of clinical trial registrations by location disease phase of development age and sex of trial participants (1999‐2021).https://www.who.int/observatories/global‐observatory‐on‐health‐research‐and‐development/monitoring/number‐of‐trial‐registrations‐by‐year‐location‐disease‐and‐phase‐of‐development(viewed Nov 2022).
2. The World Bank.DataBank: population estimates and projections.https://databank.worldbank.org/source/population‐estimates‐and‐projections(viewed Nov 2022).