DOI:
10.1055/s-00000103
Zeitschrift für Sexualforschung
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References
[RKI] Robert-Koch-Institut.
Epidemiologisches Bulletin.
Berlin:
RKI; 1996 2017 [Als Online-Dokument:
www.rki.de/DE/Content/Infekt/EpidBull/epid_bull_node.html
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