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Klingberg, Eva, Mattias Lorentzon, Dan Mellström, Mats Geijer, Jan Göthlin, Elisabet Hilme, Martin Hedberg, Hans Carlsten, και Helena Forsblad-d'Elia. Osteoporosis in Ankylosing Spondylitis - Prevalence, Risk Factors and Methods of Assessment. BioMed Central, 2012.

Klingberg, Eva, et al. Osteoporosis in Ankylosing Spondylitis - Prevalence, Risk Factors and Methods of Assessment. BioMed Central, 2012.