Hammash MH. Early Embryology of the Prechordal Region. J Fac Med Baghdad [Internet]. 2005 Apr. 3 [cited 2024 Nov. 22];47(1):68-72. Available from: https://iqjmc.uobaghdad.edu.iq/index.php/19JFacMedBaghdad36/article/view/1684