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[Ultrasound diagnosis of fetal lung maturity].
Sohn C, Stolz W, Gast AS, Bastert G. Sohn C, et al. Among authors: gast as. Z Geburtshilfe Perinatol. 1992 Mar-Apr;196(2):55-60. Z Geburtshilfe Perinatol. 1992. PMID: 1609529 German.
Thrombotic thrombocytopenic purpura.
Kaiser C, Gembruch U, Janzen V, Gast AS. Kaiser C, et al. Among authors: gast as. J Matern Fetal Neonatal Med. 2012 Oct;25(10):2138-40. doi: 10.3109/14767058.2012.666586. Epub 2012 Mar 27. J Matern Fetal Neonatal Med. 2012. PMID: 22372758
Sinus venous thrombosis: a differential diagnosis of postpartum headache.
Wittmann M, Dewald D, Urbach H, Gast AS, Linnebank M, Baumgarten G, Knuefermann P, Hering R. Wittmann M, et al. Among authors: gast as. Arch Gynecol Obstet. 2012 Jan;285(1):93-7. doi: 10.1007/s00404-011-1964-0. Epub 2011 Jul 20. Arch Gynecol Obstet. 2012. PMID: 21773786
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