The level of Ig anti‐RBD SARS‐CoV‐2 after two doses of CoronaVac vaccine. Issue 3 (18th October 2021) - Ulhaq, Zulvikar S.; Soraya, Gita V.; Indriana, Kristin; Devitasari, Rizky; Pradiptha, I. Putu Yupindra; Zulfikar, Dilloniar B.; Uxiana, Vita; Zulkarnain; Rachma, Lailia N.; Arisanti, Ditya