Knowledge, Attitude, and Practices Assessment of Unvaccinated Adult In-patients Regarding COVID-19 Vaccination in a Tertiary Hospital in Nueva Vizcaya, Philippines: A Cross-sectional Study

菲律宾新比斯开省一家三级医院未接种疫苗的成年住院患者对新冠疫苗接种的知识、态度和行为评估：一项横断面研究