title: In Reply.
authors.affiliation: Department of Paediatrics, Mount Sinai Hospital, Toronto, Ontario, Canada2University of Toronto, Toronto, Ontario, Canada.
authors.forename: Prakesh S
authors.initials: PS
authors.lastname: Shah
authors.affiliation: Department of Paediatrics, Mount Sinai Hospital, Toronto, Ontario, Canada2University of Toronto, Toronto, Ontario, Canada.
authors.forename: Amish
authors.initials: A
authors.lastname: Jain
mesh_terms: D004374:Ductus Arteriosus, Patent / Q000175:diagnosis* / Q000628:therapy*; D006801:Humans