title: Erratum to: Prospective Comparison between two different magnetic resonance defecography techniques for evaluating pelvic floor disorders: air-balloon versus gel for rectal filling.
authors.affiliation: Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I Hospital, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy. francesca.maccioni@gmail.com.
authors.forename: Francesca
authors.initials: F
authors.lastname: Maccioni
authors.affiliation: Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I Hospital, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
authors.forename: Najwa
authors.initials: N
authors.lastname: Al Ansari
authors.affiliation: Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I Hospital, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
authors.forename: Valeria
authors.initials: V
authors.lastname: Buonocore
authors.affiliation: Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I Hospital, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
authors.forename: Fabrizio
authors.initials: F
authors.lastname: Mazzamurro
authors.affiliation: Department of Surgical Sciences, Policlinico Umberto I Hospital, Sapienza University of Rome, VialeRegina Elena 324, Rome, Italy.
authors.forename: Marileda
authors.initials: M
authors.lastname: Indinnimeo
authors.affiliation: Department of Surgical Sciences, Policlinico Umberto I Hospital, Sapienza University of Rome, VialeRegina Elena 324, Rome, Italy.
authors.forename: Massimo
authors.initials: M
authors.lastname: Mongardini
authors.affiliation: Department of Radiological Sciences, Oncology and Pathology, Policlinico Umberto I Hospital, Sapienza University of Rome, Viale Regina Elena 324, 00161, Rome, Italy.
authors.forename: Carlo
authors.initials: C
authors.lastname: Catalano