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Klemi PJ, Parvinen I, Toikkanen S, Räsänen O, Linna M, Brasken P, Joensuu H.Klemi PJ, et al. Among authors: toikkanen s.Duodecim. 1990;106(20):1363-7.Duodecim. 1990.PMID: 1670568Clinical Trial.Finnish.No abstract available.