COVID-19 Vaccine Hesitancy and Emerging Variants: Evidence from Six Countries oleh Sherry Mangla, Fatima Tuz Zohra Makkia, Ashok Kumar Pathak, Renee Robinson, Nargis Sultana, Kranthi Swaroop Koonisetty, Ajlina Karamehic-Muratovic, Uyen-Sa D.T. Nguyen, Alfonso J. Rodriguez-Morales, Jorge A. Sanchez-Duque, Patrick T. Zamba, Nasrin Aghamohammadi, Fong CS, Ubydul Haque