Sulistyowati, S., Anggraini, N.W.P., Soetrisno, S., Yuliantara, E.E., Respati, S.H., Bachnas, M.A., Prabowo, W., Nurinasari, H., Pramelita, D., Setiyawati, D., Sujana, M. and Firmansyah, A. 2021. The effect of ABO blood group on COVID-19 in pregnancy. JKKI : Jurnal Kedokteran dan Kesehatan Indonesia. 12, 3 (Dec. 2021), 233–241. DOI:https://doi.org/10.20885/JKKI.Vol12.Iss3.art6.