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Krohn M, Braum LS, Sieper J, Song IH, Weiss A, Callhoff J, Althoff CE, Hamm B, Hermann KG.Krohn M, et al. Among authors: callhoff j.J Rheumatol. 2014 Mar;41(3):473-80. doi: 10.3899/jrheum.130581. Epub 2014 Feb 1.J Rheumatol. 2014.PMID: 24488424Clinical Trial.
Luque Ramos A, Redeker I, Hoffmann F, Callhoff J, Zink A, Albrecht K.Luque Ramos A, et al. Among authors: callhoff j.J Rheumatol. 2019 Jun;46(6):564-571. doi: 10.3899/jrheum.180668. Epub 2019 Jan 15.J Rheumatol. 2019.PMID: 30647170