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Sex-ratio variation in the Bille settlement.
Fertmann R, Schümann M, Karmaus W, Schmid-Höpfner S, Küppers-Chinnow M. Fertmann R, et al. Among authors: kuppers chinnow m. Scand J Work Environ Health. 1997 Aug;23(4):308-10. doi: 10.5271/sjweh.225. Scand J Work Environ Health. 1997. PMID: 9322823 Free article. No abstract available.