title: Costs of Absenteeism In Ankylosing Spondylitis Based On Real-Life Data From Poland's Social Insurance Institution Database In 2012.
authors.affiliation: Jagiellonian University Medical Collage, Krakow, Poland.
authors.forename: K
authors.initials: K
authors.lastname: Malinowski
authors.affiliation: Jagiellonian University Medical College, Krakow, Poland.
authors.forename: P
authors.initials: P
authors.lastname: Kawalec