1. Deaths: final data for 2005;Kung;Natl Vital Stat Rep,2008
2. Fetal lung maturity;Grenache;Clin Biochem,2006
3. Diagnosis of respiratory distress by amniocentesis;Gluck;Am J Obstet Gynecol,1971
4. [4] College of American P, Lung Maturity Survey, Sets LM-A & -B. Northfield, IL: College of American Pathologists, 2007–2009.
5. Changing patterns of fetal lung maturity testing;McGinnis;J Perinatol,2008