title: [Authors' response].
authors.affiliation: Klinika Chorób Wewnętrznych i Kardiologii, Uniwersytet Medyczny w Warszawie. bienias_p@o2.pl.
authors.forename: Piotr
authors.initials: P
authors.lastname: Bienias
authors.forename: Anna
authors.initials: A
authors.lastname: Kostera-Pruszczyk
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Bieganowska
authors.forename: Maria
authors.initials: M
authors.lastname: Miszczak-Knecht
authors.forename: Piotr
authors.initials: P
authors.lastname: Pruszczyk