Tyagi S, Agarwal RK, Agrawal M, Kapoor M, Tiwari S. Study of vertical transmission of COVID-19 infection in COVID-19 positive obstetrical patients by comparing amniotic fluid and immediate neonatal COVID-19 RT-PCR. Int J Reprod Contracept Obstet Gynecol [Internet]. 2021 Aug. 26 [cited 2025 Oct. 13];10(9):3383-8. Available from: https://www.ijrcog.org/index.php/ijrcog/article/view/10618