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Malmström MJ, Segerberg-Konttinen M, Tuominen TS, Hietanen JH, Wolf JE, Sane JI, Konttinen YT.Malmström MJ, et al. Among authors: hietanen jh.Scand J Rheumatol. 1988;17(2):77-86. doi: 10.3109/03009748809098766.Scand J Rheumatol. 1988.PMID: 3291100Clinical Trial.