By Fornoff F.   Reitter A.   Louwen F.   in Der Gynäkologe

ISSN:0017-5994|40|8|642-644

Springer Publishing Company ‎(2007)‎

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By Reitter A.   Geka F.   Liszka M.   Louwen F.   in Der Gynäkologe

ISSN:0017-5994|40|1|62-66

Springer Publishing Company ‎(2007)‎

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By Rabe H.   Debus O.   Frosch M.   Stussel J.   Louwen F.   Kurlemann G.   Harms E.   in European Journal of Ultrasound

ISSN:0929-8266|14|2|171-178

Elsevier‎(2001)‎

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By Meschede D   Louwen F   Eiben B   Horst J   in Human Reproduction

ISSN:1460-2350|12|9|1913-1914

Oxford University Press‎(1997)‎

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