Raithatha, D. N., Patel, D. M., Patel, D. R., & Chauhan, D. L. N. (2011). Velamentous insertion of umbilical cord in twin pregnancy: Velamentous insertion of umbilical cord. National Journal of Integrated Research in Medicine, 2(4), 121–123. https://doi.org/10.70284/njirm.v2i4.215