Basak, Palash, Abir, Tanvir, Al Mamun, Abdullah, Zainol, Noor Raihani, Khanam, Mansura, Haque, Md. Rashidul, Milton, Abul Hasnat, Agho, Kingsley Emwinyore. MDPI AG; 2022. A Global Study on the Correlates of Gross Domestic Product (GDP) and COVID-19 Vaccine Distribution.