title: The vasoactive intestinal polypeptide (VIP) levels at the patients with ankylosing spondylitis and its association with inflammation markers.
authors.affiliation: Division of Internal Medicine, GATA Haydarpasa Training Hospital, Istanbul, Turkey.
authors.forename: Selim
authors.initials: S
authors.lastname: Nalbant
authors.forename: Eylem
authors.initials: E
authors.lastname: Cagiltay
authors.forename: Burak
authors.initials: B
authors.lastname: Sahan
authors.forename: Hakan M
authors.initials: HM
authors.lastname: Terekeci
authors.forename: Cagatay
authors.initials: C
authors.lastname: Oktenli