Positive correlation between mature amniotic fluid optical density readings and the absence of neonatal hyaline membrane disease.
Cetrulo CL, Sbarra AJ, Selvaraj RJ, Feingold M, Michlewitz H, Newton E, D'Alton ME, Herschel MJ, Kennedy JL, Shakr CJ. Positive correlation between mature amniotic fluid optical density readings and the absence of neonatal hyaline membrane disease. J Reprod Med. 1985 Dec; 30(12):929-32.