Where should the Normal Position of the Umbilicus be in the Neonate? - Onal, E.; Turan, O.; Karabulut, R.; Hirfanoglu, I.; Turkyilmaz, C.; Sonmez, K.; Türkyılmaz, Z.; Kapısız, A.; Basaklar, A. C. (European Journal of Pediatric Surgery, 2010)