G. Lanzillotti

Successful management of a cervical twin pregnancy: neoadjuvant systemic methotrexate and prophylactic high cervical cerclage before curettage.

E. Cicinelli, G. Trojano, G. Colafiglio, 2009, Fertility and sterility.

Umbilical vein blood flow in fetuses with normal and lean umbilical cord

F. Ghezzi, M. Franchi, L. Raio, 2001, Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology.