Classification of conjoined twins

From: Baken L, Rousian M, Kompanje EJ, et al. Diagnostic techniques and criteria for first-trimester conjoined twin documentation: A review of the literature illustrated by three recent cases. Obstet Gynecol Surv 2013; 68:743. DOI:10.1097/OGX.00000000000000000. Copyright © 2013. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.