Ratan, Simmi K., Satish K. Aggarwal, Nita Aneja Khurana, Anjan Dhua, Gowhar N Mufti, and Vidyanand Deshpandey. “Retroperitoneal Fetus-in-Fetu: Another Supportive Evidence for Twinning Theory”. Teratology Studies 1, no. 1 (November 7, 2011): e2. Accessed April 18, 2024. https://www.pagepressjournals.org/tera/article/view/ts.2011.e2.