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Ala-Korpela M, Usenius JP, Keisala J, van den Boogaart A, Vainio P, Jokisaari J, Soimakallio S, Kauppinen R.Ala-Korpela M, et al.MAGMA. 1995 Sep-Dec;3(3-4):129-36. doi: 10.1007/BF01771697.MAGMA. 1995.PMID: 8749730