Suryanto S, Gugun AM. DIFFERENCES IN S-RBD ANTIBODY TITERS OF SARS-CoV-2 POST-VACCINATION AND POST-COVID-19 IN UMY EMPLOYEES THAT DO GENERAL MEDICAL CHECK UP AT AMC MUHAMMADIYAH HOSPITAL YOGYAKARTA. cerdika [Internet]. 2023Jul.25 [cited 2026May25];3(7):651-6. Available from: https://www.cerdika.publikasiindonesia.id.solusipublish.com/index.php/cerdika/article/view/637