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Geipel A, Gembruch U, Ludwig M, Germer U, Schwinger E, Dormeier A, Diedrich K.Geipel A, et al.Hum Reprod. 1999 Oct;14(10):2629-34. doi: 10.1093/humrep/14.10.2629.Hum Reprod. 1999.PMID: 10527999Clinical Trial.
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