L. Effects of fetal fluid balance on amniotic fluid volume. Semin Perinatol 1993; 17: 158.
21 21. Gray MJ, Neslen ED, Plentl AA. Estimation of water transfer from amniotic fluid to fetus. Proc Soc Exp Biol Med 1956; 92:463.
22 22. Abramovich DR. Fetal factors influencing the volume and composition of liquor amnii. J Obstet Gynaecol Br Commonw 1970; 77:865.
23 23. Chamberlain P. Amniotic fluid volume: ultrasound assessment and clinical significance. Semin Perinatol 1985; 9:163.
24 24. Kurjak A, Kirkinen P, Latin V, et al. Ultrasonic assessment of fetal kidney function in normal andcomplicated pregnancies. Am J Obstet Gynecol 1981; 141:266.
25 25. Weiner CP, Grose C. Prenatal diagnosis of congenital cytomegalovirus infection by virus isolation from amniotic fluid. Am J Obstet Gynecol 1990; 163:1253.
26 26. Ostergard DR. The physiology and clinical importance of amniotic fluid. A review. Obstet Gynecol Surv 1970; 25:297.
27 27. Fuchs F. Volume of amniotic fluid at various stages of pregnancy. Clin Obstet Gynecol 1966; 9:449.
28 28. Nelson MM. Amniotic fluid volumes in early pregnancy. J Obstet Gynaecol Br Commonw 1972; 79:50.
29 29. Wagner G, Fuchs F. The volume of amniotic fluid in the first half of human pregnancy. J Obstet Gynaecol Br Emp 1962; 69:131.
30 30. Rhodes P. The volume of liquor amnii in early pregnancy. J Obstet Gynaecol Br Commonw 1966; 73:23.
31 31. Abramovich DR. The volume of amniotic fluid in early pregnancy. J Obstet Gynaecol Br Commonw 1968; 75:728.
32 32. Queenan JT, Thompson W, Whitfield CR, et al. Amniotic fluid volumes in normal pregnancies. Am J Obstet Gynecol 1972; 114:34.
33 33. Moore TR. Clinical evaluation of amniotic fluid volume. Semin Perinatol 1993; 17:173.
34 34. Larmon JE, Ross BS. Clinical utility of amniotic fluid volume assessment. Obstet Gynecol Clin North Am 1998; 25:639.
35 35. Magann EF, Chauhan SP, Doherty DA, et al. A review of idiopathic hydramnios and pregnancy outcomes. Obstet Gynecol Surv 2007; 62:795.
36 36. Lu SC, Chang CH, Yu CH, et al. Reappraisal of normal amniotic fluid index in an Asian population: analysis of 27,088 records. Taiwan J Obstet Gynecol 2007; 46: 260.
37 37. Sandlin AT, Ounpraseuth ST, Spencer HJ, et al. Amniotic fluid volume in normal singleton pregnancies: modeling with quantile regression. Arch Gynecol Obstet 2014; 289:967.
38 38. Barrilleaux PS, Magann EF, Chauhan SP, et al. Amniotic fluid index as a predictor of adverse perinatal outcome in the HELLP syndrome. J Reprod Med 2007; 52:293.
39 39. Morris RK, Meller CH, Tamblyn J, et al. Association and prediction of amniotic fluid measurements for adverse pregnancy outcome: systematic review and meta‐analysis. BJOG 2014; 121:686.
40 40. Stevenson AC, Davison BCC, Oakes MW. Genetic counselling, 2nd edn. Philadelphia: Lippincott Williams & Wilkins, 1976.
41 41. Moise KJ, Jr. Toward consistent terminology: assessment and reporting of amniotic fluid volume. Semin Perinatol 2013; 37:370.
42 42. Beischer N, Desmedt E, Ratten G, et al. The significance of recurrent polyhydramnios. Aust N Z J Obstet Gynecol 1993; 33:25.
43 43. Scott JS. The volume and circulation of the liquor amnii: clinical observations. Proc R Soc Med 1966; 59:1128.
44 44. Esplin MS, Hallam S, Farrington PF, et al. Myotonic dystrophy is a significant cause of idiopathic polyhydramnios. Am J Obstet Gynecol 1998; 179:974.
45 45. Benirschke K, McKay DG. The antidiuretic hormone in fetus and infant; histochemical observations with special reference to amniotic fluid formation. Obstet Gynecol 1953; 1:638.
46 46. Potter EL. Bilateral absence of ureters and kidneys: a report of 50 cases. Obstet Gynecol 1965; 25:3.
47 47. Spaggiari E, Heidet L, Grange G, et al. Prognosis and outcome of pregnancies exposed to renin‐angiotensin system blockers. Prenat Diagn 2012; 32:1071.
48 48. Sherer DM. A review of amniotic fluid dynamics and the enigma of isolated oligohydramnios. Am J Perinatol 2002; 19:253.
49 49. Voxman EG, Tran S, Wing DA. Low amniotic fluid index as a predictor of adverse perinatal outcome. J Perinatol 2002; 22:282.
50 50. HellstromWJ, Kogan BA, Jeffrey RB, Jr., et al. The natural history of prenatal hydronephrosis with normal amounts of amniotic fluid. J Urol 1984; 132:947.
51 51. Sutcliffe RG. The nature and origin of the soluble protein in human amniotic fluid. Biol Rev Camb Philos Soc 1975; 50:1.
52 52. Sutcliffe RG, Brock DJ. Immunological studies on the nature and origin of the major proteins in amniotic fluid. J Obstet Gynaecol Br Commonw 1973; 80:721.
53 53. Gitlin D, Kumate J, Urrusti J, et al. The selectivity of the human placenta in the transfer of plasma proteins from mother to fetus. J Clin Invest 1964; 43:1938.
54 54. Baardman ME, Erwich JJ, Berger RM, et al. The origin of fetal sterols in second‐trimester amniotic fluid: endogenous synthesis or maternal–fetal transport? Am J Obstet Gynecol 2012; 207:202 e19.
55 55. Muller‐Eberhard U, Bashore R. Assessment of Rh disease by ratios of bilirubin to albumin and hemopexin to albumin in amniotic fluid. N Engl J Med 1970; 282:1163.
56 56. Johnson AM, Umansky I, Alper CA, et al. Amniotic fluid proteins: maternal and fetal contributions. J Pediatr 1974; 84:588.
57 57. Heikinheimo M, Jalanko H, Leisti J, et al. Amniotic fluid pregnancy‐specific beta 1‐glycoprotein (SP1) in fetal developmental disorders. Prenat Diagn 1984; 4:147.
58 58. Jorgensen OS, Norgaard‐Pedersen B. The synaptic membrane D2‐protein in amniotic fluid from pregnancies with fetal neural tube defects. Prenat Diagn 1981; 1:3.
59 59. Sindic CJ, Freund M, Van Regemorter N, et al. S‐100 protein in amniotic fluid of anencephalic fetuses. Prenat Diagn 1984; 4:297.
60 60. Anneren G, Esscher T, Larsson L, et al. S‐100 protein and neuron‐specific enolase in amniotic fluid as markers of abdominal wall and neural tube defects in the fetus. Prenat Diagn 1988; 8:323.
61 61. Gogiel T, Bielecki DA, Bankowski E. Collagenous constituents of amniotic fluid. Acta Biochim Pol 1998; 45:1037.
62 62. Uyeno D. The physical properties and chemical composition of human amniotic fluid. J Biol Chem 1919; 37:77.
63 63. Campbell J, Wathen N, Macintosh M, et al. Biochemical composition of amniotic fluid and extraembryonic coelomic fluid in the first trimester of pregnancy. Br J Obstet Gynaecol 1992; 99:563.
64 64. Chiu RW, Chan KC, Gao Y, et al. Noninvasive prenatal diagnosis of fetal chromosomal aneuploidy by massively parallel genomic sequencing of DNA in maternal plasma. Proc Natl Acad Sci USA 2008; 105:20458.
65 65. Hui L, Wick HC, Edlow AG, et al. Global gene expression analysis of term amniotic fluid cell‐free fetal RNA. Obstet Gynecol 2013; 121:1248.
66 66. Salafsky IS, Nadler HL. Intracellular organelles and enzymes in cell‐free amniotic fluid. Am J Obstet Gynecol 1971; 111:1046.
67 67. Risteli L, Autio‐Harmainen H, von Koskull H, et al. Basement membrane proteins in human amniotic fluid. Clin Genet 1984; 26:271.
68 68. Phimister GM, Marshall RD. Tamm‐Horsfall glycoprotein in human amniotic fluid. Clin Chim Acta 1983; 128:261.
69 69. Lee TY, Schafer IA. Glycosaminoglycan composition of human amniotic fluid. Biochim Biophys Acta 1974; 354:264.
70 70. Duncan DM, Logan RW, Ferguson‐Smith MA, et al. The measurement of acid mucopolysaccharides (glycosaminoglycans) in amniotic fluid and urine. Clin Chim Acta 1973; 45:73.
71 71. Thompson AR. Factor IX and prothrombin in amniotic fluid and fetal plasma: constraints on prenatal diagnosis of hemophilia B and evidence of proteolysis. Blood 1984; 64:867.
72 72. Queenan JT, Gadow EC, Bachner P, et al. Amniotic fluid proteins in normal and Rh‐sensitized pregnancies. Am J Obstet