title: Reply.
authors.affiliation: Sint Maartenskliniek, Nijmegen, The Netherlands.
authors.forename: Nienke
authors.initials: N
authors.lastname: Lesuis
authors.affiliation: Sint Maartenskliniek, Nijmegen, The Netherlands.
authors.forename: Ester
authors.initials: E
authors.lastname: Piek
authors.affiliation: Sint Maartenskliniek, Nijmegen, The Netherlands.
authors.forename: Hatice
authors.initials: H
authors.lastname: Demirel
authors.affiliation: Sint Maartenskliniek, Nijmegen, The Netherlands.
authors.forename: Alfons A
authors.initials: AA
authors.lastname: den Broeder
authors.affiliation: Radboud University Medical Centre, Nijmegen, The Netherlands.
authors.forename: Marlies E J L
authors.initials: ME
authors.lastname: Hulscher
authors.affiliation: Radboud University Medical Centre, Nijmegen, The Netherlands.
authors.forename: Inger
authors.initials: I
authors.lastname: Meek
authors.affiliation: Maartenskliniek Woerden, Woerden, The Netherlands.
authors.forename: Nicole
authors.initials: N
authors.lastname: van der Laan-Baalbergen
authors.affiliation: Karolinska Institute, Stockholm, Sweden.
authors.forename: Ronald F
authors.initials: RF
authors.lastname: van Vollenhoven