Andhre Dominique P. Cruz; Precious Shayne S. Dizon; Paula Mae A. Dychitan; Nicole Aldreiy M. Encina; Alysandra S. Evangelista; Carrie Anne S. Gagpanan; Felicitas E. Ponciano. Crisis of Confidence: Willingness of the Filipinos Within Metro Manila to Undergo COVID-19 Vaccination in 2020-2021. IJPRSE 2021, 2, 493-508.