Kalaij, A. G. I., V. J. Dirjayanto, S. M. Yusuf, and E. J. Nelwan. “Immunogenicity and Safety of Adenovirus-Based Vector Vaccines for COVID-19: A Systematic Review and Meta-Analysis”. Medical Journal of Indonesia, Vol. 30, no. 4, Dec. 2021, pp. 264-78, doi:10.13181/mji.oa.215559.