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Frese-Schaper M, Keil A, Steiner SK, Gugger M, Körner M, Kocher GJ, Schiffer L, Anders HJ, Huynh-Do U, Schmid RA, Frese S.Frese-Schaper M, et al. Among authors: keil a.Arthritis Rheumatol. 2014 Aug;66(8):2259-69. doi: 10.1002/art.38665.Arthritis Rheumatol. 2014.PMID: 24729466
Keil A, Frese-Schaper M, Steiner SK, Körner M, Schmid RA, Frese S.Keil A, et al.Arthritis Rheumatol. 2015 Jul;67(7):1858-67. doi: 10.1002/art.39119.Arthritis Rheumatol. 2015.PMID: 25779651
Keil A, Hall SR, Körner M, Herrmann M, Schmid RA, Frese S.Keil A, et al.Arthritis Res Ther. 2016 Oct 22;18(1):243. doi: 10.1186/s13075-016-1144-5.Arthritis Res Ther. 2016.PMID: 27770825Free PMC article.