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22. [HCG, FSH and oxytocinase values in the first trimester of twin-gravidity (author's transl)]. Donát J; Jirkalová V Cesk Gynekol; 1979 May; 44(4):266-71. PubMed ID: 445606 [No Abstract] [Full Text] [Related]
23. Screening for trisomy 21 in twins using first trimester ultrasound and maternal serum biochemistry in a one-stop clinic: a review of three years experience. Spencer K; Nicolaides KH BJOG; 2003 Mar; 110(3):276-80. PubMed ID: 12628267 [TBL] [Abstract][Full Text] [Related]
28. Midtrimester maternal serum screening after multifetal pregnancy reduction in pregnancies conceived by in vitro fertilization. Rotmensch S; Celentano C; Shalev J; Vishne TH; Lipitz S; Ben-Rafael Z; Glezerman M J Assist Reprod Genet; 1999 Jan; 16(1):8-12. PubMed ID: 9987687 [TBL] [Abstract][Full Text] [Related]
29. The vanishing pregnancy? Dickey RP; Olar TT; Curole DN; Taylor SN; Rye PH Fertil Steril; 1992 May; 57(5):1140-2. PubMed ID: 1572488 [No Abstract] [Full Text] [Related]
30. Prenatal diagnosis of trisomy 21 in monozygotic twins with increased nuchal translucency and abnormal serum biochemistry. Verdin SM; Braithwaite JM; Spencer K; Economides DL Fetal Diagn Ther; 1997; 12(3):153-5. PubMed ID: 9313073 [TBL] [Abstract][Full Text] [Related]
31. Ectopic pregnancy after in-vitro fertilization is characterized by delayed implantation but a normal increase of serum human chorionic gonadotrophin and its subunits. Korhonen J; Tiitinen A; Alfthan H; Ylöstalo P; Stenman UH Hum Reprod; 1996 Dec; 11(12):2750-7. PubMed ID: 9021384 [TBL] [Abstract][Full Text] [Related]
32. Maternal peripheral T helper 1-type and T helper 2-type immunity in women during the first trimester of twin pregnancy. Suzuki S; Okudaira S Arch Gynecol Obstet; 2004 Dec; 270(4):260-2. PubMed ID: 14551795 [TBL] [Abstract][Full Text] [Related]
33. Current concepts of Down syndrome screening tests in assisted reproduction twin pregnancies: another double trouble. Maymon R; Neeman O; Shulman A; Rosen H; Herman A Prenat Diagn; 2005 Sep; 25(9):746-50. PubMed ID: 16170837 [TBL] [Abstract][Full Text] [Related]
34. Multiple marker screening for Down syndrome in twin pregnancies. Neveux LM; Palomaki GE; Knight GJ; Haddow JE Prenat Diagn; 1996 Jan; 16(1):29-34. PubMed ID: 8821849 [TBL] [Abstract][Full Text] [Related]
35. Letter: Screening for early detection of twin pregnancies. Einerh Y; Jacobsson K Lancet; 1976 Apr; 1(7962):745. PubMed ID: 56556 [No Abstract] [Full Text] [Related]
36. Effects of extensive population screening on the outcome of twin pregnancies. Grennert L; Persson PH Prog Clin Biol Res; 1978; 24 Pt C():109-11. PubMed ID: 569314 [No Abstract] [Full Text] [Related]
37. [Glycaemic control of the maternal serum levels of human chorionic somatomammotrophin (HCS) during pregnancy (author's transl)]. Gaspard U; Sandront H; Lambotte R Acta Paediatr Belg; 1973; 27(3):218-30. PubMed ID: 4759350 [No Abstract] [Full Text] [Related]