title: Knotting on heaven's door: 3D color Doppler ultrasound imaging of a true cord knot.
authors.affiliation: Department of Prenatal Diagnosis, Altamedica Fetal Maternal Medical Centre, Rome, Italy.
authors.forename: Pietro
authors.initials: P
authors.lastname: Cignini
authors.affiliation: Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood "G. Barresi", University of Messina, Via Consolare Valeria 1, 98125, Messina, Italy.
authors.forename: Antonio Simone
authors.initials: AS
authors.lastname: Laganà
authors.affiliation: Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood "G. Barresi", University of Messina, Via Consolare Valeria 1, 98125, Messina, Italy.
authors.forename: Annalisa
authors.initials: A
authors.lastname: Retto
authors.affiliation: Unit of Gynecology and Obstetrics, Department of Human Pathology in Adulthood and Childhood "G. Barresi", University of Messina, Via Consolare Valeria 1, 98125, Messina, Italy. vitalesalvatore@hotmail.com.
authors.forename: Salvatore Giovanni
authors.initials: SG
authors.lastname: Vitale