1. The developing human (clinically oriented embryology);Moore,1993
2. The growing of the cecum and vermiform appendix during the fetal period;Malas;Fetal. Diagn. Ther.,2001
3. The position of the human cecum in fetal life;Fitzgerald;J. Anat.,1971
4. The age of appearance of the haustra of the human colon;Pace;J. Anat.,1971
5. Bergman RA, Afifi AK, Miyauchi R. http://www.vh.org/Providers/Textbooks/AnatomicVariants/OrganSystem/Text/LargeIntestine.html.