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Kamm C, Castelon-Konkiewitz E, Naumann M, Heinen F, Brack M, Nebe A, Ceballos-Baumann A, Gasser T.Kamm C, et al. Among authors: heinen f.Mov Disord. 1999 Jul;14(4):681-3. doi: 10.1002/1531-8257(199907)14:4<681::aid-mds1020>3.0.co;2-m.Mov Disord. 1999.PMID: 10435508