title: Should we consider patent foramen ovale and secundum atrial septal defect as different steps of a single anatomo-clinical continuum?
authors.affiliation: Section of Adult Congenital and Adult Heart Disease, Cardiovascular Diagnosis and Endoluminal Interventions, Rovigo General Hospital, Rovigo 45100, Italy ; E-mail: jackyheart71@yahoo.it.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Rigatelli
keywords: Anatomy; Atrial septal defect; Echocardiography; Patent foramen ovale