References
- Thornton JG, Hornbuckle J, Vail A, et al. Infant wellbeing at 2 years of age in the Growth Restriction Intervention Trial (GRIT): multicentred randomised controlled trial. Lancet 2004;364:513–20
- Wijnberger LD, de Kleine M, Voorbij HA, et al. The effect of clinical characteristics on the lecithin/sphingomyelin ratio and lamellar body count: a cross-sectional study. J Matern Fetal Neonatal Med 2003;14:373–82
- di Iorio R, Marinoni E, Coacci F, et al. Amniotic fluid nitric oxide and uteroplacental blood flow in pregnancy complicated by intrauterine growth retardation. Br J Obstet Gynaecol 1997;104:1134–9
- Huang CC, Wang ST, Chang YC, et al. Measurement of the urinary lactate:creatinine ratio for the early identification of newborn infants at risk for hypoxic-ischemic encephalopathy. N Engl J Med 1999;341:328–35
- Roux JF, Nakamura J, Brown E, et al. The lecithin-sphingomyelin ratio of amniotic fluid: an index of fetal lung maturity? Pediatrics 1972;49:464–7
- Gluck L, Kulovich MV, Borer RC Jr, et al. Diagnosis of the respiratory distress syndrome by amniocentesis. Am J Obstet Gynecol 1971;109:440–5
- Lind T. The biochemistry of amniotic fluid. In: Sandler M, ed. Amniotic fluid and its clinical significance. 1st ed. New York: Marcel Dekker Inc; 1981
- Bock JL. Metabolic profiling of amniotic fluid by proton nuclear magnetic resonance spectroscopy: correlation with fetal maturation and other clinical variables. Clin Chem 1994;40:56–61
- Sims CJ, Fujito DT, Burholt DR, et al. Quantification of human amniotic fluid constituents by high resolution proton nuclear magnetic resonance (NMR) spectroscopy. Prenat Diagn 1993;13:473–80
- Liu KZ, Mantsch HH. Simultaneous quantitation from infrared spectra of glucose concentrations, lactate concentrations, and lecithin/sphingomyelin ratios in amniotic fluid. Am J Obstet Gynecol 1999;180:696–702