COVID-19 Delta Variant: Perceptions, Worries, and Vaccine-Booster Acceptability among Healthcare Workers oleh Khalid Alhasan, Fadi Aljamaan, Mohamad-Hani Temsah, Fatimah Alshahrani, Rolan Bassrawi, Ali Alhaboob, Rasha Assiri, Shuliweeh Alenezi, Ali Alaraj, Reham I. Alhomoudi, Mohammed A. Batais, Lama Al-Eyadhy, Rabih Halwani, Naif AbdulMajeed, Ahmed Al-Jedai, Abdulrahman Senjab, Ziad A. Memish, Sarah Al-Subaie, Mazin Barry, Jaffar A. Al-Tawfiq