Comparison of transvaginal ultrasonography and endometrial biopsy in endometrial surveillance in postmenopausal HRT users von Hänggi, Willy, Bersinger, Niklaus, Altermatt, Hans Jörg, Birkhäuser, Martin Hans

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Maternal alpha‐fetoprotein levels in multiple pregnancies von Abbas, Anthony, Johnson, Mark, Bersinger, Niklaus, Nicolaides, Kypros

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Production of Protein Hormones by Cultured Trophoblast Cells Isolated from Term and Early Placentae von MALEK, ANTOINE, SAGER, RUTH, WILLI, AMARA, MÜLLER, JÜRG, HÄNGGI, WILLY, BERSINGER, NIKLAUS, LEISER, RUDOLF

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Synthesis and secretion of apolipoprotein E by human placenta and choriocarcinoma cell lines von Rindler, Michael J., Traber, Maret G., Esterman, Abbie L., Bersinger, Niklaus A., Dancis, Joseph

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Production of HCG, alkaline phosphatase, and “new-generation” pregnancy proteins by the human placenta perfused in presence and absence of pregnancy serum von Bersinger, Niklaus A., Malek, Antoine, Schneider, Henning

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Pregnancy associated plasma protein A as a marker for Down syndrome in the second trimester of pregnancy von Knight, George J., Palomaki, Glenn E., Haddow, James E., Miller, Wayne, Bersinger, Niklaus A., Schneider, Henning

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Two-site enzyme immunoassay for pregnancy associated plasma protein A (PAPP-A) von Bersinger, Niklaus A.

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Trophoblast-endometrium co-cultures as a means of assessment of endometrial readiness for implantation von Bersinger, Niklaus A., Sinoshich, Michael J., Baber, Rodney, Torode, Hugh, Saunders, Douglas M.

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The pattern of serum levels of pregnancy‐associated plasma protein A (PAPP‐A) during the ovulatory menstrual cycle von BERSINGER, NIKLAUS, KLOPPER, ARNOLD

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Observations on the source of pregnancy‐associated plasma protein A (PAPP‐A) von BERSINGER, NIKLAUS A., KLOPPER, ARNOLD

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Serum concentration of pregnancy-associated plasma protein A in the first trimester of pregnancy von Bersinger, Niklaus A., Klopper, Arnold

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Serum concentration of pregnancy specific and pregnancy-sssociated proteins in early gestation von Bersinger, Niklaus A., Gerrie, Linda M., Luke, Garry, Klopper, Arnold

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Evidence for sialic acid on the nicotinic acetylcholine receptor from Torpedo marmorata von Bersinger, Niklaus A., Velazco, Maria-Inés, James, Richard W., Fulpius, Bernard W.

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